It's frustrating that this works in preview but not on the iPad. It's such a basic feature and it's commonly used in iPad apps it seems like it would be a simple thing to add into DPS.
It makes no sense to me that Adobe could even miss this obvious shortfall. As long as there is no other conflicting listener to the same user event, anything should work: buttons within MSO, Pan & Zoom in MSO, etc. Where do we post these complaints so the developers can fix this ASAP? If I knew web coding en force, I would greatly prefer building my entire DPS document within a Web Content frame using HTML5/CSS3/JS. At least that way I could actually design something of value in DPS. But, alas I'm stuck with Adobe's myopic implementation and clunky DPS interface.
This is for feature requests, not rants.
Interactive capability within MSO’s has already been announced for the next drop.
Perhaps you might want to visit the main forum and do a bit of reading there.