GUIUtiliy.RotateAroundPivot() doesn't work

Hello everybody,

I have a small problem: I created an Image-Object inside of my Canvas, added a script to it which should do a minor task: It should roate the Image-Object.

To make that happen I used a Setup like this:

 void OnGUI ()
 {
      GUIUtility.RotateAroundPivot(10f, new Vector2(Screen.width / 2, Screen.height / 2));
 }

The problem is.... it is just not working xD No error message, no animation at all...

Do I have to refresh the canvas? Is the problem linked to the canvas containing multiple objects?

Thank you very much in advance

Have a nice day :)