one tyflow goes through another one

[dv2000]

Hi,
We have separate tyflows for cracked ground and rock generation.  For some reason small rocks go through tyflow ground cracks.  How can I fix it.  Both have physx  Thanks

i need to add tyflow 1  large rocks as collider to tyflow 2 small rocks

Attached is the scene small rocks go through large rocks

[dv2000]

I am trying to get this effect with tiny rocks on top of cracks https://youtu.be/5epA4lSeWSA?si=iZd6MIgDZ7qa_TMA

[tyFlow]

From your screenshots I don't see where the large rocks are imported into your small rock flow as colliders. Independent tyFlow objects can't communicate with each other (except when loading one into another using Birth Flow/Flow update)...so if you generate your small rocks into flow #2, you need to import your big rocks from flow #1 into flow #2 using Birth Flow/Flow Update and set them as kinematic PhysX colliders (PhysX Shape + PhysX Switch operators).