Apply Highlight Material to a specific mesh of a multiple mesh Blueprint

Hi there!

I would like to apply a hightlight only to a mesh that is part of a blueprint with other meshes, linked together by a scene component.

E.g. I would like only the door handle to be highlighted.

I’ve tried specifying what I want to highlight but it seems to ignore the command.

I have created this actor component which I add to the meshes I want to highlight:

I noticed that it randomly chooses the part to be highlighted because on two doors, once it took the handle, the other the frame.

One last thing: how can I prevent the cursor over command working through walls as well? Can I set up a proximity?

Thank you!