To assign complex expressions:

  1. Drag the Assign Source Expression icon from the top right hand corner to the target node or the canvas (center pane). The Expression Builder appears.

  2. Create an expression using the available source variables and functions.

    Optionally click Help for more information about the Expression Builder dialog.

  3. Click OK to close the Expression Builder.

  4. If you had dragged the expression to the canvas or center pane in Step 1, drag the expression icon in the canvas to the desired target node. This maps the expression to the target variable.

    Note:

    To edit the assignment, right-click the assignment in the bottom pane. Select Edit Source Expression or Edit Target Expression to edit the source and target respectively.

  5. Click OK to create the assignment.