How to make any widget component required
I have several SelectList widgets on a screen. At the bottom of the screen I have a button labeled 'NEXT' that I want to advance to the desired screen, but only if certain of the SelectList widgets have had an entry selected. Something like this pseudocode: goto screen "screen-name" iff widget.user_name and widget.project_number <> null. Maybe the attached .vp file will help to illustrate what I'd like to make happen.