If your library is a 'System' library meaning active for all activities, then you can likely add this to the Volume+ button on the System Page.

However, in an activity where Volume+ does not use the System Properties (that check box in the top right of the properties dialog), you will have to add the script to Volume+ in each activity where this box is NOT checked.


If your library was added at the activity level, you will have to add script to all activities Volume + buttons.

A picture is worth 1000 words here. Can you take some screenshots from PEP2, post them somewhere, an link them here?

With regard to the repeating commands, have a look a the dev guide's Widget class specifically searching the PDF for onHold and repeatInterval.