MouseClick Event not working for new Actors

Hi,

I have a problem with mouse click events. I created a new game with the puzzle Blueprint Template. Now I Imported some of my assets and started working on my idea.

The yellow cube is the puzzle blueprint and it’s working fine with click events. It changed the color from blue to yellow. If I’m using the same Blueprint with the tree mesh in the background, nothing is happening.

The tree has a simple big box collsion with the same settings as the cube but nothing is triggerd. Any idea how to solve this?

Thank sou very much!