Cube doesn't overlap with Box Collision

I have a box collision in an actor, which is set to overlap all (it doesn’t overlap anything inside the actor itself) but while playing in the editor when I drop a box (physics body) on the Box Collision it doesn’t detect it (I have a string that activates when the Box Collision is overlapped).

Is yor box set to GenerateOverlapEvents?
It’s in its Details in Collision section.

Yes, it is. It also detects overlap when the I step on it (as a Character blueprint class)

Wait, I just found out the cube that is dropped on the button needs to Generate Overlap Events too.