Needing help with character hitting object that plays sound but loops if stuck on object (with do once added)

Thanks for the reply, when I do that it doesn’t seem to play any audio then.
I attempted on the collision box too and it would play a sound but would only register the one hit basically.

This is my blueprint just to confirm I understood and setup correctly from your last comment.

And just to confirm, I apply this to the 3D model itself (Cylinder) or do I add it to the hitbox (Capsule)?