Adding Collision for Hands and Weapons

So I’m following a tutorial that shows me how to add collision for hands and weapons. I add a sphere collision to the hands. Then in the Construction Script I connect the left/right hand collision and Mech node to the Attach To node. After that, in the Event Graph, I add in the Set Collision Enabled node, but what do I connect that to. I look in my Event Graph and I’m not sure what to connect that to.