Heya ItsDumi!
So the problem here seems to be likely that the “Map” you want to block the hit isn’t set to block visibility in its collision settings. It’s likely set to ignore. If this is a BP with multiple components, you’ll want to make sure only the one you want to cause a hit has its collision set to block visibility! Select the map you want to have the collision and look at the details panel for it. Find Collision, set it to custom, and tell it to block visibility 
Alternatively you can make a different channel to do a trace on, but something this simple likely doesn’t need that.
At least I hope that’s the issue! Get back to us and let us know if it isn’t so we can try something else!