how to add current rotation set?

Need some help on how to add a current rotation to bone that will apply. Trying to aim the arm with predefine rotation and add to the rotation while adding to the rotation when the character aim at something.

rotation = bonerotation + cam/aim

Any ideas?

I haven’t done this before but I’d imagine if your bone was also driven by an animation that frame, you would need to place any bone modification code in the LateUpdate behaviour to ensure it wouldn’t get overridden by the animation system.

yeah that would be right. not sure how to code it.