Rotation attribution problem

Hello! I'm getting a problem when I do a direct attribution to a rotation:

 player.avatar.transform.rotation= newRotation;

After that, the rotation values appear on the transform of the object perfectly, but the axis of the object doesn't change anymore, they remain constant in rotation (0,0,0), even if I force it to rotate on the Scene interface. Does someone knows why this happens and how to fix it? Thanks.