Lyndel, you are great!
counter = 1 + counter; didn't work but the new widget's field myCounter does increment and it is exactly what I needed.

As for my test xcf it had only one activity/page/panel aside from main page containing 1 button. The script we discussed was under the main page's only button.
Good luck with your project and pardon me if I picked your brains a bit.
Thank very much you for your help, it is much appreciated.
Sorin