Trying to make gesture based magic for VR game

so I’m trying to make a magic system for a vr game where by putting your hand in certain positions it does magic but I can’t think of how I would implement this. All the contents in the unreal VR Template are all squished together so I can’t just put a hitbox in there (at least with what I’ve tried that didn’t work). Would I need to measure the relative coordinates of the hands and use that rather than a hitbox?