Leap Motion collision with sphere

Hello, I’m trying to trigger a sound when my LeapFloatingHandsCharacter hit a sphere.
Right now if I touch the sphere it reacts and moves.
I would like to know how to trigger a sound when the leap hands interact with the sphere.
Can someone guide me with this?

Here is my project:

I’m using starter content.

I’m new into Unreal and everything seems so grey here.