Niagara Mesh Render not colliding with Pawn

Hello Everyone,

I created an asteroid belt with the Niagara emitter, the asteroids are 2 different mesh.

In the Niagara graph I also added to the Particle Update module the Collision module, providing I think the proper setting. Nevertheless I can’t have the asteroids meshes to bump into my pawn or against themselves.

The pawn has the Physic collision setting on “Pawn” and is properly working into the scene.
Does anyone encountered this issue and solved it?

Thanks in advance