object emitted not colliding?

Hey guys, Im trying to get my character to emit a beam, that will impulse one item and destroy another item, but for some reason I cant get it to collide with anything?
Any tips? http://flowlab.io/game/play/459499

I see it colliding with other objects, for example it pushes the box out of the way. What gives you the impression that it’s not working?

Also, I like the artwork.