Rotating gameobject via slider

Hi there,

I'm absolutely new to programming, and currently I have the following issue:

I have a 3d-Object whose rotation I want to control both via InputField and Slider. I made it work with the old GUI-system, but I have issues getting it done with the new UI-System. In the moment, I can't even get it to work with the slider only... How can I "link" the gameobject's rotation to the slidervalue?? I tried the following, but nothing happens...

 private float RotationA;
 private GameObject myObject;
 
     void Start () {
         myObject = GameObject.Find ("myObject");
     }
 
     public void RotateA()
     {
         RotationA = GameObject.Find("sldr_A").GetComponent<Slider>().value;
         myObject.transform.localEulerAngles = new Vector3 (RotationA, 0, 0);
     }
 }

maybe someone could help me out, that would be great! Thank you in advance!