So, fastloops for multiples of same object?

Sorry, but I can't open 2.5 files. Maybe try it in the 2.5 forums.

Here is the MMF2 file : Attachment 13661

In fact, objects don't go through each others if there's a constant gravity. But with an alterable value to get the gravity acceleration, objects stop inside another, but still work fine on the purple ground.

I tried to add an action when green objects touch another green object to stop them (I think it doesn't work because the red box isn't create fast enough during the loop), but that's not better, maybe because MMF doesn't know which green object to stop (when I mean "stop", I mean the same events as they touch the ground).

Any idea please?