From Variable [Part] To Variable [Part]
From Variable Property To Variable Property

Do one of the following:
Select an assign activity from the Process Editor canvas, if you want to add a Copy operation to it. The Copy is added after any current Copy operations.
Go to Step 2 if you want to create a new assign activity automatically in the currently selected Scope.
In the Process Variables list, open the two variables for the
From
and
To
clauses of the Copy operation.
Drag the variable, part, or property of the
From
variable to the appropriate variable, part, or property of the
To
variable.
Tip:
Before you release the mouse button, you can view the Copy specification in the Process Developer status bar.