VR -Getting Physics Object to look at Camera when Picked up

Hi guys, I’m having a problem with a VR function I’m trying to create. Basically the function allows the user to pick up and put down objects using a laser pointer. It’s all working fine however I want to lock the rotation of the physics object to the player camera (HMD) and I’m having no luck. I’m sure it’ll be some simple math to fix, below is a screenshot of gameplay ( the cube isn’t facing the player which is the problem ) and a screenshot of my attempt. Any help would be great, thank you!