Car Destruction

[msnluka]

I mean pictures/videos of your setup and what's going wrong. It'll be much easier to diagnose than you trying to describe the issue.

Although since you mentioned groups it might be a group issue, especially since that's an old tutorial that was made before some group stuff was fixed years ago. Shortest answer: particles need to be in overlapping groups in order to collide. So if you add a particle to group 1, for example, make sure you enable group 1 in your PhysX ground (tyFlow PhysX rollout) in order for them to collide.

that with the group in the tyflow phy made it thanks 

now i import the typarticleskin object into a nother flow and he also takes the voronoi with it and displays it why is that so ?