Hello! I'm trying to do an animation of a mask falling in a grain simulation. My problem is that I created a simulation into a heightfield plane but the simulation is affected by rotation of the plan so the grains bounce on each other and this doesn't look realistic at all. So after some research I found that we can created some wet sand who's more static and doesn't move like the vellumgrains classic.

So my question is how to create the link between my object ( who's a vellumgrains also so I can have more natural effect on it ) and the wet sand simulation collision.

You can find some picture from my scene and a flipbook also to demonstrate my problem. Thanks in advance!