[QUOTE=Weishaupt] let me get this "straight" for my squish brain. You want the targetplattform to move down a certain amount of pixels when the boxes stacked on the plattform build up to a certain hight?!
...and it has to move back up, if the "tower" somehow shrinks....tumbles down?[/QUOTE]
You pretty much have it spot on. But it doesn't need to move back up.