Colission With particles

Hi :slight_smile:
I have a lazer I created with cascade and I created for that a blueprint class.
I want to be able to increase or decrese the accelaration rate of this lazer within blueprint…

I tried to do that for couple of hours but nothing came out…

I thout about puting a static mesh inside my bluprint with the lazer… and every time I want to increase the accelaration
I could just move the mesh. But the lazer go through the static mesh.
The particle has collision module and it’s collide with meshes outside the blueprint… but not inside the blueprint.

Any help will be appriciated!