Destructible meshes help

Hi. Iv been playing arount with destructible meshes generated by the engine itself. but im unable to make my proyectile make the wall break.

I can break the wall when i go trought and all works fine but when i throw a proyectile against the break wont trigger.
iv checked all the posible default physical options so its probably something i should add on event hit but for now im unable to find the node to trigger that on the hitted actor

Thx in advance

Did you looked at the content example (Accessible from the launcher Learn tab)?