Rotate ui behind camera?

Question

Unity

There is a Canvas on the scene with an Image in it - the Canvas is a child of the camera and rotates behind it - but the problem is that the Image doesn't rotate behind the camera, but is a child of the Canvas - why?
well, I need the ui to move behind the camera in vr - like a pointer

I'm surprised why the following script does not work for the orange circle

GameObject ParentTransform = transform.parent.gameObject;
    transform.position = new Vector3(ParentTransform.transform.position.x, ParentTransform.transform.position.y, ParentTransform.transform.position.z);

Answer 1

Found a solution:

void RotAin()
    {
        int x = 1;
        if (x==1)
        {
 gameObject.transform.position = new Vector3(transform.rotation.w, transform.rotation.w, gameObject.transform.position.z);
            x++;
        }
        else
        {
            gameObject.transform.position = new Vector3(transform.rotation.w, gameObject.transform.rotation.y, gameObject.transform.position.z);
        }
       
    }

and - call in Update void RotAin()