The Assign activity is a light-weight mapping tool. Like a map, the properties for Assign require that you specify a source and target. Using Assign, you can:
Set variable values.
Add and remove subtrees from complex variables using Graft and Prune.
Retrieve system variables.
Perform multiple operations on contexts within a single Assign.
Arrange the order of execution of assignment operations defined within a single Assign activity.
Assign provides two types of data modification:
Value based
Change to the data is value-based when a specific value is set in the target document. A value can be a literal, context variable, environment variable, or process id.
Structure based
Change to the data is structure-based when an XPath notation is used to pass a group of values to the target document.
Using an Assign to Specify an Instance of a Repeating Element
Acting on Repeating Elements in Data
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