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