Are Animator bloking scriptbased Rotation?

Hey, i got a 2D-figur wich should point his arm in the direction the 2nd joystick is facing. I wrote the following Script for that:

 Vector2 aim = new Vector2(Input.GetAxis("Aim X"), Input.GetAxis("Aim Y"));
 transform.rotation = Quaternion.LookRotation(aim);

Sadly ths doesn't appear to work. I think its because i used a Animator. I could be wrong thou. I even set the Animator to a animation in wich the arm is not affected, or at least not mentioned.

Any Ideas?

PS: for those who dont get the principle. In Starboud you kann use a flashlight in the direction of your mouse like this.