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Field Source:
Select the field source from the dropdown menu
Field: All fields that are present in your object are displayed
Select the fields from the dropdown menu
Variable: Your object's present variable and the newly created variable both are displayed
Select the variable from the dropdown menu
Model:
Static:
Cookie:
LocalStorage:
QueryParam:
User:
Merge Field Expression: MergeField is a Field element containing a reference to a data field by its name
Message Body: Fill in that with whatever message you want
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