(This item pertains to the Call Subroutine dialog box, accessible through Insert | Flow Control Command | Call Sub.)
To edit an existing argument inside your CALLSUB command:
In the Call Subroutine dialog box, double-click on the value of the argument you want to change. A value box appears and shows the default value for the called subroutine.
Type a new value.
Click the OK button.
For additional information on how to edit or create new arguments for a subroutine, see "Creating a New Subroutine" and "Editing an Existing Subroutine".