On your right mouse button event, wait until you trace and confirm that the actor hit is simulating physics before you try and add the physics handle and set the physicsHandleActive bool to true.
You are also taking the rotation of your pawn and saying it is the rotatio of the other actor.
There also isn’t much info on what is happening so I am assuming that it just doesn’t appear to be doing anything. Is the line trace hitting the object you are looking at? If so, confirm that it is simulating physics, nothing will happen if it doesn’t. That is the only thing I can really think of that could be wrong with it without going through it with print strings.