Evaluate Expression Activity (how-to)

Functionality

This article describes how to use the “Evaluate Expression Activity“. We are going to show you how to use this activity to create a filename (string) and use it in a download activity.

Settings

Parameters

Input-data

Property	Entity	Required

Property	Entity	Required
Entity	Selection of your choice	Yes

Output-data

Property	Entity	Expected Result

Property	Entity	Expected Result
Expression-result		String-value

Accessing Parameters

CurrentUser = "@#@USER@#@";

ApplicationSettings = "@#@APPLICATIONSETTINGS@#@";

NormalParameter = "#@#@#";

RelativeDate = "@#DATE#@";

Relative = "#@@@#";

Example

Go to the Flow tab and press create new workflow.
Drag-and-drop the “Evaluate Expression Activity“ to your start activity.
Double-click the in-going branch and bind a parameter. This should be an entity that we later use its parameters for evaluation.
When using static text, it should be surrounded by ' (apostrophe). By using the + (plus sign) you can append values. [ (Hard bracket) give you guidance to the parameters within the entity you bound earlier. In our case or evaluation expression looks like this: 'Offert '+[Offertnummer]+'.pdf'
Add “Download File Activity” to follow our “Evaluate Expression”.
Double-click the in-going branch and bind the parameters as following: