I'm doing a scratch-off training piece...when they click and drag over the boxes, the cover scratches off to reveal a question that needs to be answered (I did NOT write this). I can create a dynamic mask no problem and it appears to "scratch off" the cover (though it's not really, of course), but does anyone know how to make something happen once a particular portion of the movieClip is revealed? Like if 50% is uncovered, or if the words are totally uncovered? If anyone knows anything about this, I would be incredibly grateful.