Add rotation offset

Hi, is there a way to add a relative rotation offset to a relative or world rotation (during an event tick) ?
Using combine rotators makes a weird result (looks like an average rotation between both rotators).

Concretely, the plane is attached to a motioncontroller with a relative rotation of 90/0/90, and I want this plane to face the HMD camera. Using “find look at rotation” makes the plane face the camera with X axis, but I want it to face with the Z one.

Just found the “add local rotation” node. I was thinking it would add this rotation each frame, but it refers to a reference frame so it adds the rotation just once.
Problem solved !