Using IPointerEnterHandler, IPointerExitHandler?

Unity Engine
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1

Hi,

I try to use IPointerEnterHandler & IPointerExitHandler, but I can’t get it working

I instantiate an Entity at runtime with a Prefab

EntityCommandBuffer ecb = new(Allocator.Temp);

Entity entity = ecb.Instantiate(grid.ValueRO.prefab);

ecb.AddComponent(entity, new LocalTransform
{
	Position = new float3(...),
	Rotation = Quaternion.identity,
	Scale = 1.0f
});

ecb.Instantiate(entity);

I tried using it with a MonoBehaviour as part of the Prefab, which is working, as there I also use an InputAction to receive a mouse click
But IPointerHandler won’t fire

public class MouseWatcher : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
{
    public InputAction Input;

    private void OnEnable()
    {
        Input.performed += MouseClicked;
        Input.Enable();
    }
    
    public void OnPointerEnter(PointerEventData eventData) // not working
    { }
	
    public void OnPointerExit(PointerEventData eventData) // not working
    { }

    private void MouseClicked(InputAction.CallbackContext ctx) // working fine
    { }
}

How can this be done right?

I those IPointerHandlers do not work within ECS, what would be a way to do a gameobject hover effect in ECS?

Best regards