The visual workflow editor in Mendix Studio Pro allows you to build extendable processes in a format that closely follows BPMN concepts. In the example below, you use a Show message activity to warn end-users about unpaid orders with a pop-up message in the client. 2. 1 Introduction With the log-message action you can create messages that appear in the log of your Mendix application. Microflows are visual ways of expressing what traditionally would be written in code. This module is very useful for long-running microflows and parallel processing. You can also use getCaption () to get its caption. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Is it possible to get the currentuser his MODULE role in a microflow? Let's say I have a module with 2 roles: Administrator and User. For more information, see the Microflows section of Offline-First Data. This how-to will describe how to find changes made in objects based on a certain activity. Studio Pro 9 & 10 Compatible. Even with the powerful navigation and search support in the Mendix. Unary Expressions; Arithmetic Expressions; Relational. 1 Introduction A sequence flow is a flow that is shown an arrow that links elements (events, activities, decisions, etc. Get Workflows Action. The automatic code reviewer for Mendix checks for over 100 rules in different categories such as security, performance, and maintainability. The create object. If the order is infinitely valid, the ValidTo attribute will be set to 2999-12-30. You can specify the location and how the response of the REST call should be handled. Depending on the values stored in "example" records in the object "template", I want the Microflow to complete this new record with the same values for each member (field). I have a microflow that should be available for both users but based on the user his MODULE role some different actions must be performed in the microflow. For each iteration, the flow inside the loop is executed. Do you possibly have an exclusive split in your microflow that might divert your path? answered 2018-11-07. This page only describes the properties specific to the action. In this situation a merge can be used to avoid redundancy. As used in one of our activities above, here are notes about the microflow expressions: Input widgets can trigger microflow to fill some data. 10. The first parameter can be an attribute of a domain model entity of type Date and time, a variable of type Date and time, or a Date and time value created using a Date Creation function. The data. This page only describes the properties specific to the action. For example, you have a situation where the microflow has been. core. 1. 2 Syntax The syntax is as follows: year-from-dateTime ( attribute [, timezone ] ) 2. If you want to see what microflows are for and what kind of elements they contain, you can check Microflows. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. Mx10 Feature Release Calendar;. 10. Studio Pro 9 & 10 Compatible. The text parameter works the same way as a nanoflow and is restricted to only using the format appropriate to the locale from the language of the current user in Mendix apps. But as Derek said, it wouldn't hurt to do both. Don’t forget you can also use this to combine a. Which microflow. Studio Pro 9 & 10 Compatible. This section isn't intended to cover every function or expression Mendix has to offer. 1 Overview The starts-with() function tests whether a string attribute starts with a specific string (case-insensitive) as a sub-string. To accomplish this, we will utilize the two microflow functions below: Round – Rounding a floating-point number, optionally to a specified precision Floor – Rounding a floating-point number down. Calculate the average time to complete a task, then round that number down so the end result is the average time minute value. Its result should be an enumeration or a boolean and it can be used in an exclusive split to make a decision based on that result. 0. The TrimTo… functions help you to trim any date/time value to the desired value. See Microflow Element Common Properties for properties that all microflow activities share (for example, caption). Make sure the microflow to be executed has an input parameter with data type Object and entity Queue. 1 Introduction The Cast object activity is used in a microflow after an object type decision to change the type of object from the generalized object type to the specialized object type of the path out of the object type decision. A merge can be used to combine multiple sequence flows into one sequence flow. Call Microflow; Call Workflow; Workflow Properties; Configure Workflow Security; Workflow Engine; Add Workflow to Existing App; Jump to Different Activities; Workflow Versioning and Conflict Mitigation; Workflow for Employee Onboarding; Add Custom Action to Workflow Toolbox; Expressions. For example, it can be used to close a pop-up page: 2. 1 Introduction To smarten up your app with business logic you can use microflows. 2. These are just a few examples of the runtime errors you can get. 1 Common Section Name is the internal name of the element. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Step 1. Mendix Native Mobile Builder; Native Builder; Native Template. The idea is that complicated decisions can be consolidated in rules and reused in various places. Studio Pro 9 & 10 Compatible. This activity can be used in both Microflows and Nanoflows. A date picker must be placed in a data container. This will make showing data from external systems a breeze! Here’s how it works. It is displayed in the workflow element to make the workflow easier to read and. Usage of a regular expression, that you define in the project explorer, is only assignable to the validation-expression of an entity: You have probably created such a regex and are now trying to use it/call it in a microflow. This activity can be used in both Microflows and Nanoflows. Microflow Properties; Triggering a Microflow From a Menu Item; Testing Microflows with Unit Test Module;1 Introduction Mathematical function calls include a limited number of mathematical operations on numbers, such as returning the largest value or rounding a number up. Depending on the chosen moment and type, a microflow is executed before or after creating, committing, deleting, or rolling back an object. app schema and the component display, along with the ML Mapping. Create a different user role for mobile features Create a role-based mobile homepage Set the project security accordingly Set conditional visibility on the relevant features. See Microflow Element Common Properties for properties that all microflow activities share (for example, caption). g). 1 Introduction The Create object activity can be used to create an object. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. regular expressions. How to publish a Microflow as a REST Operation. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Describes special checks in expressions in Mendix. Release Notes. Describes the functions for parsing Date and time values from strings using a specified pattern or producing a string from a Date and time value in Mendix. Your only option, as far as I know, is in the microflow in an expression call. There’s also a text field that is made visible if user selects option ‘Other’. Set the conditional editability to all fields based on this boolean value. This will create a sub-folder called ‘ node_modules ’ where a hierarchy of various package files will be stored. mendix. Microflow Properties; Triggering a Microflow From a Menu Item;1 Introduction Verify that your microflow works as expected by creating unit tests with the Unit Testing module. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source; Configure Form and Show Form Items;. for example. Function ‘addDays expects argument types (Date and time, Integer/Long)’’ still occurs, even after placing the Course object before the Change object activity (Otherwise it won’t be in scope for the microflow expression in the Change object activity). Expressions. A regular expression has the properties described below. Community: Introduction Mendix has comprehensive functionality to find changes made to several subjects in the application. 1 Introduction A parameter is a special kind of variable that is used an input for the microflow. Expressions. The difference between them is that dateTime uses the calendar of the session used in the function call, and dateTimeUTC uses the UTC calendar. This activity can only be used in Microflows. 2 Properties An example of list view. Unary Expressions; Arithmetic Expressions; Relational. If you want to know about the settings of the Call a microflow event action, you can check Microflow Settings. which format is use to compare dates i. Unary Expressions; Arithmetic Expressions; Relational. This dramatically reduces the amount of technical errors during run-time, but the Modeler isn’t able to check if your app contains functional errors. 2 Properties There are two sets of properties for this activity, those in the dialog box on the left, and those in the properties pane on the right: The. 1 Introduction An annotation is an element that can be used to put comments to a flow. - Mendix World. The new line needs to be between brackets (if you wish to type the content of the new line in the microflow expression). languages. Browse the documentation for Mendix products, read about latest releases, and make contributions for the Mendix community. In the example below, a Buyer variable of the Customer entity is returned by the end event: The number of end events depends on the number of possible outcomes of the microflow or nanoflow. These are just a few examples of the runtime errors you can get. It consists of two components: Microflows. How to compare the length (or is empty) a retrieved list in a microflow. When a microflow is triggered, the parameters are filled with the current values. If it succeeds, you've validated your input. It looks like you try to access a variable called 'LoggedInUser' in the exclusive split. context: mendix/lib/MxContextCall Microflow; Call Workflow; Workflow Properties; Configure Workflow Security; Workflow Engine; Add Workflow to Existing App; Jump to Different Activities; Workflow Versioning and Conflict Mitigation; Workflow for Employee Onboarding; Add Custom Action to Workflow Toolbox; Expressions. For a complete list of properties, take a look at the relevant element. What I want to do is the subtraction variable A<$GetInventory/Labst> , and variable B<$GetInventory/Clabs> The formula is. 2 Action. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;With Mendix 9. If all those microflows do a lot of retrieves and aggregates on large datasets, it is easy to run into performance or memory problems. java:33) Caused by:. Go to your domain model and create an NPE, give it a suitable name ( e. 1 Introduction A list view shows a list of objects. Make the Microflow not-accessible to ‘Administrators’. To add a search field to the search bar, right-click within the search bar in your data grid and choose Add search field > Type of the search field. 1 Introduction Constants are used to define configuration values. Here is the Request. 1 answers. 9. Expressions. The Mendix Model SDK, supported by the Mendix Platform SDK, is a tool that has been around for years. There are two ways to resolve this, but keep in mind that the proper solution will depend on the specific use case: Add the permission to create the SaleOffer to the ‘Administrator’ module role. 1 Introduction Enumerations are referenced by <modulename>. For example, you can display a list of all profiles: Each object is shown using a template. Caused by: com. Then I need to say If the list is empty, ie has 0 items. Now we need to define a java action that will take the name of the dataset. Mx10 Feature Release Calendar; Studio Pro. support the following feature: A team Association 20. Describes the expressions that can be used in Mendix for a variety of purposes (for example, to change a member of an object based on logic). This action is ignored and does not work when a microflow is called from an offline or native app. To do this I have created a decision in the microflow and trying to add an expression as below. shubham jain. This can be done with or without committing and with or without events. Locally your data set works with this behavior, But on an other (cloud) node the data set contains data which doesn't match the used microflow expressions. Expressions. Now I want, lets say, promote Customer to. Mendix Native Mobile Builder; Native Builder; Native Template. 2. 1 Introduction This document describes the arithmetic operators which are supported in expressions. However, the proxy settings should differ depending on the. This action is ignored and does not work when a microflow is called from an offline, native, or hybrid app. Unary Expressions; Arithmetic Expressions; Relational. With this release, working in Studio Pro is now smoother than ever. Studio Pro 9 & 10 Compatible. 0. Release Notes. Release Notes. 2 Example This query returns all the customers from which the name contains the string an: Environments: Studio Pro Java [contains(Name, 'an')] //Sales. MENDIX INTERMEDIATE EXAM 2023-2024 CERTIFICATION ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED. g. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. You have a situation where. If you need full control over the output format, consider using the data type specific format functions. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Sometimes it is necessary to configure a breakpoint so that the microflow only breaks on a certain condition. Access the ONNX file, Jupyter notebook, and. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Teaches you how to work with a list of objects in a microflow as well retrieve a filtered list of objects from the database. Expr. Get Workflow Data. 2. This how-to teaches you how to do the following: Set up the Unit. For more information, see the Loop Type Property section below. 1 Input Parameters The input parameters are described in the table below: Value Type A value. sort: mx. Studio Pro 9 & 10 Compatible. g. This is achieved with breakpoint conditions and is configured by use of microflow expressions. Mx10 Feature Release Calendar; Studio Pro. Step 5: Exchange authorization code for refresh and access tokens. 1 Introduction The Create object activity can be used to create an object. com. A parameter can be an attribute of a context object or an expression which also has access to the surrounding context objects and their attributes. 2 Common 2. You can. 1 Introduction Dates can be created with the dateTime and dateTimeUTC functions. 2 Differences from Microflows Rules are very similar to microflows; see the documentation. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source; Configure Form and Show Form Items;. npm install. 2 timezone timezone. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Mendix Native Mobile Builder; Native Builder; Native Template. Mendix Native Mobile Builder; Native Builder; Native Template. Entity validation rule , input widget validation expression , Rule. 1 Introduction Mendix allows for microflows to be triggered in pages by a variety of widgets. This how-to teaches you how to do the following: Connect your debugger to your cloud environment 2 Prerequisites Before starting this how-to, make sure you have completed the following prerequisites: Install a Basic,. evaluate(Expr. a check. Describes the function for parsing integer from strings in Mendix. 2. Is this possible? Or is the only way create 2. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;-The concept of defining variables in Mendix is on the activity microflow. Mendix Native Mobile Builder; Native Builder; Native Template. If you want to see what microflows are for and what kind of elements they contain, you can check Microflows. You can. Hi community! What is the correct way of writing an expression for an exclusive split for an enumeration attribute, where I want to check if the value is equal to one of the possible outcomes? Many thanks Austin. Studio Pro 9 & 10 Compatible. 1 Examples. 1 Examples The examples below illustrate which value the expression returns: If you use the following input: (6 > 4) and (3 < 5) The output is true because both of. Describes Mendix best practices for developing Mendix applications. You can also use getCaption () to get its. Option Description Expression An expression is used to define the conditions for the direction. You can use an annotation as a reminder and put it. 1 Introduction A reference selector is used to display and, optionally, allow the end-user to select the value of a one-to-one or one-to-many association by selecting the associated object. Studio Pro 9 & 10 Compatible. For the expression resulting in a Boolean, two flows are possible: true and false. In the example below, you use a Show message activity to warn end-users about unpaid orders with a pop-up message in the client. This activity can be used in both Microflows and Nanoflows. The difference will always be zero or a positive number. For that I used the ParseDecimal function. Date and time 2. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Mendix supports different methods to ensure the integrity of your application data: Data types – ensure only valid data types can be stored. LTS, MTS, and Monthly Releases; 10. 1 Introduction In addition to debugging a local deployment of your app, it is also possible to debug applications that are already in a cloud environment. You probably did not handle an empty value of $Employee/DateOfBirth. Studio Pro 9 & 10 Compatible. You have to create objects and add them to the list. asked 2020-10-14. b) When a new enumeration value is added (say Stage4), Mendix will automatically prompt you to go to the microflow and update what the flow should be for the new value. Presents a list of how-tos about monitoring or troubleshooting Mendix applications. java:33) Caused by:. Mendix Native Mobile Builder; Native Builder; Native Template. The " Card Action " is : The Mendix Community Blog I. Event handlers should be used moderately, as they will be triggered every time the corresponding event occurs, so they. Describes using Java Actions to extend the functionality of your Mendix app. You can also use a decision to assign a different online meeting URL to an employee based on which time zone they work in. A variable can have one of the. – Enhanced expression editor for Microflow & Page editor – Mendix World – Atlas improvements – Pluggable widgets, API filtering/sorting – Shorter build time – Close multiple pages in (progressive) web apps – BarCode scanner & TakePicture – Accordion. com – Enhanced expression editor for Microflow & Page editor – Mendix World – Atlas improvements – Pluggable widgets, API filtering/sorting – Shorter build time – Close multiple pages in (progressive) web apps – BarCode scanner & TakePicture – Accordion Community: Mendix documentation repository. 2 toString Converts the specified value to a string representation. 2 and The and operator checks two Boolean expressions and only returns true if both of the expressions are true. Depending on the chosen moment and type, a microflow is executed before or after creating, committing, deleting, or rolling back an object. Studio Pro 9 & 10 Compatible. Mx10 Feature Release Calendar; Studio Pro. languages. 1 Introduction This document describes the arithmetic operators which are supported in expressions. 2 Properties An example of create object properties is represented in the image below: There are two sets of properties for this activity, those in the dialog box on the left, and those in the properties pane on the right. 1 Introduction A user role aggregates a number of access rights on data, forms, and microflows. Expressions. 1 Introduction The change object activity can be used to change the members of an object. Please share your suggestions. 1 Optimization In some projects, it is necessary to evaluate large datasets in a microflow (for example, for reporting purposes). For example if you want a list of buildings, you can retrieve all the buildings, add them to the list, and return the list. In all examples, the first input can be either a new dateTime (depicted in all examples), a variable of type DateTime, or an attribute of a domain entity of type DateTime. Studio Pro 9 & 10 Compatible. The list of objects shown is determined by a data source. If you want to see what microflows are for and what kind of elements they contain, you can check Microflows. So have one exclusive split that looks at Type1 attribute, and based on the value of that or the result of a boolean expression you write in that exclusive split, you can follow the correct logic branch. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Describes the expressions that can be used in Mendix for a variety of purposes (for example, to change a member of an object based on logic). Expression to use in a Microflow Decision determining if the App is running Locally or on a specific Cloud. In an Entity it is possible to have stored attributes and attributes which can be calculated via a microflow. It uses the values set in the Languages tab of App Settings to display a correctly localized value to the end-user, using the Language object associated with the end-user. data~SortSpec: sorting of XPath query results before feeding them to the Microflow. Mendix Native Mobile Builder; Native Builder; Native Template. These can differ per environment. Docs. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. g. Studio Pro 9 & 10 Compatible. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. Listed below are all the widgets that can directly trigger microflows. For example, you have a module called OrderProcessing, in which an enumeration Status is defined with two possible values: started and completed. answered 2019-03-18. If you are debugging in the cloud, be aware of other app end-users. How can validation messages for the same entity be presented together? Perform all the validations in. I wouldn't really know any other way in which you can use regular. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. Unary Expressions; Arithmetic Expressions; Relational Expressions; Special Checks; Boolean Expressions;Mendix Native Mobile Builder; Native Builder; Native Template. 1 Introduction The Validation feedback activity does a validation check, and if this check fails, it shows a red message to the end-user. Note. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. I have the same model like PizzaMario sample project (Entity Customer, entity Order and Order_Customer association 1:n between). 1 Variable name The variable of which you want to change the value. 2 millisecondsBetween The millisecondsBetween function calculates the absolute difference between the input values in milliseconds. For example if you want a list of buildings, you can retrieve all the buildings, add them to the list, and return the list. stadium can have only one team. Microflow Properties; Triggering a Microflow From a Menu Item; Testing Microflows with Unit Test Module; Error Handling in Microflows; Extracting and Using Sub-Microflows; Retrieving Current User with a Microflow; Nanoflows. Validation rules – validate if the data is unique, specified, and within a range. Anyone know how to write this expression in Mendix? Thanks, Mark. Mendix Native Mobile Builder; Native Builder; Native Template. Muhammad AbuRumman. In the image below, the object name is EnclosingCustomer and is shown in black. 1 Introduction A regular expression resource document is used in the validation rules of an entity to describe a set of criteria that a string must match. 1 Introduction A Retrieve activity can be used to get one or more objects, either by directly traversing an association of another object, or by retrieving objects from the database. For each parameter in the template, define a microflow expression, the value of which will be inserted at the position of the parameter. 1 Introduction An exclusive split is an element that makes a choice based on a condition and follows (exactly) one of the outgoing sequence flows. In a Mendix microflow a single quote is escaped by putting another single quote in front of it: '' (these are 2 single quotes ', not a double qoute "). Its result should be an enumeration or a Boolean and it can be used in a decision to make a decision based on that result. They can be used on pages, layouts and even other snippets. 2, we made it possible to do server-side sorting and paging when using a microflow as datasource in a data grid. You can. I have the same model like PizzaMario sample project (Entity Customer, entity Order and Order_Customer association 1:n between). Expressions. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. Mendix Native Mobile Builder; Native Builder; Native Template. I'm not 100% sure if still true, but in the past the rapid exam consisted of a selection of the Knowlegde Check questions of the Become a Rapid Developer course. A user role aggregates a number of access rights on data, forms and microflows. Upload to Study. Hi, Im building an app using mendix. For REST API’s to work, we use the proxy configuration settings in the general tab of the Call REST Action. mpleted all learning paths in one of the lev. How can I validate a microflow input using a regex in my project resources? You could create a "validate" metaobject with a validation rule (containing the regular expression), and then try to save the input to that metaobject. An enumeration consists of one or more enumeration values. For example, you can use a decision to decide whether a customer gets a discount or not. Parametr for microflow is Object PizzaMario. So if you would use the single quote in the expression it wouldn't work. 1. 1 Introduction This document describes the properties of a microflow. Mendix 6. Mendix Native Mobile Builder; Native Builder; Native Template. Regardless, it's important to understand their intended use and syntax from within Studio Pro and how to interact with them while building out needed validation or rules in a microflow. But as far as I understood your question, add your check in the split and draw up lines for true or false and handle it accordingly. As used in one of our activities above, here are notes about the microflow expressions: Input widgets can trigger microflow to fill some data automatically. Hereby it defines the order of execution. Mx10 Feature Release Calendar; Studio Pro. darshan ranganatha-1. Filter ), and add an attribute on the base of which you want to filter the list, in our case Name (String). Mendix Native Mobile Builder; Native Builder; Native Template. If you need documentation on expressions, you should find what you need here. 2 Output If the two inputs are. See Microflow Element Common Properties for properties that all activities share (for example, caption). Don’t forget to add the object as paramater and retrieve the object first though! As far as I am aware there is no way to auto-check all of the attributes in a microflow. 2 answers. 1 attribute attribute specifies the attribute to extract the day from. e. Event handlers should be used moderately, as they will be triggered every time the corresponding event occurs, so they must be for things you want always to. Creates a new Microflow unit in the SDK and on the server. Studio Pro 9 & 10 Compatible. 2. 2 Action Properties 2. This how-to teaches you how to configure the properties and settings of a microflow button placed on a grid or reference set selector. THEN). 2 Properties Call microflow properties consist of the following sections: Common General Outcomes Parameters 2. Describes special checks in expressions in Mendix. 2 Properties An example of change object properties is represented in the image. 2. 1 Introduction The Counter activity can be used to increment a metrics counter by a specific value. I want to use a regex in a microflow; how can I achieve this, without defining a validation rule on an attribute of an entity? I believe there is an notation for using a regex in eg. The new FindByExpression will be automatically stored in the 'operation' property of the parent ListOperationAction element passed as argument. Now, I want to validate that the text field is NOT empty. 1 Introduction Verify that your microflow works as expected by creating unit tests with the Unit Testing module. The "Card Action" is: a Building Block 18. If you change something in the. 2 Action Properties 2. This how-to will describe how to find changes made in objects based on a certain activity. Mendix is. This how-to teaches you how to configure the properties and settings of a microflow button placed on a grid or reference set selector. Expression for checking if an enumerate attribute is equal to an enumeration value. For example, you can have a snippet that is used both in the contents area of a template grid and in a data view. The first parameter can be an attribute of a domain model entity of type Date and time, a variable of type Date and time, or a Date and time value created using a Date Creation function. Customer. If you want to use an object of the Customer entity in a microflow, use the parameter. Describes how to retrieve the current user of your application in Studio Pro with a microflow. Perform list sorting actions on Mendix objects regardless of entity type Move to start or end of list; Move up or down the list;. Common Name The name can be used to refer to the regular expression from a validation rule of an entity. The expression should result in a Boolean or an enumeration. 2 trimToSeconds This function is used to trim the date to seconds, rounding off all milliseconds to zero. If you need full control over the output format, consider using the data type specific format functions. 1 Introduction Basic functions to convert values of various data types to string. Expects one argument, the projects. Mendix Native Mobile Builder; Native Builder; Native Template. expressions. Your only option, as far as I know, is in the microflow in an expression call. Its purpose is to provide developers with programmatic access to the model of a Mendix app. Call Microflow; Call Workflow; Workflow Properties; Configure Workflow Security; Workflow Engine; Add Workflow to Existing App; Jump to Different Activities; Workflow Versioning and Conflict Mitigation; Workflow for Employee Onboarding; Add Custom Action to Workflow Toolbox; Expressions. This is the "equals" field I don't know the expressions for: This is the page containing the units and the button "Open Planning" that should pass you to the "Planning page" and filter the data by the clicked unit, e. Mark Hibyan. In a Mendix microflow a single quote is escaped by putting another single quote in front of it: '' (these are 2 single quotes ', not a double qoute "). Unary Expressions; Arithmetic Expressions; Relational. This activity can only be used in Microflows. Workflows are natively part of the logic capabilities of Mendix. 2 Action Properties 2. 1 Introduction An annotation is an element that can be used to put comments to a flow. What can you do? Add a Retrieve activity to the microflow What is a microflow expression? A short piece of code that adds custom logic to your microflows What is the maximum number of outgoing flows a merge can have? One Where can you find the validation messages for attributes that are not connected to input widgets on a page?. Microflows can be triggered in various ways, as in, buttons, input fields, scheduled events, and more. Per object or per process step you want to have a single microflow that is in charge of the validation. Microflow Source; Nanoflow Source; Association Source; Listen to Widget Source;. 1. For example, for decimal, use formatDecimal.