Why is it not detecting OnPointEnter

so i followed a tutorial from youtube and i made this Script: using System.Collections; using UnityEngine; using UnityEngine.EventSystems; using System; using UnityEngine.UI;

 public class ItemSlot : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
 {
 
     private Item _item;
 
     public Item Item
     {
         get { return _item; }
         set
         {
             _item = value;
             if (_item == null)
             {
                 image.enabled = false;
             }
             else
             {
                 image.sprite = _item.Icon;
                 image.enabled = true;
             }
         }
     }
     [SerializeField] Image image;
     [SerializeField] ItemToolTip tooltip;
 
     protected virtual void OnValidate()
     {
         if (image == null)
             image = GetComponent<Image>();
 
         if (tooltip == null)
             tooltip = FindObjectOfType<ItemToolTip>();
     }
     public void OnPointerEnter(PointerEventData eventData)
     {
         Debug.Log("Slot Detected!");
         if (Item is EquippableItem)
         {
             tooltip.ShowTooltip((EquippableItem)Item);
         }
     }
 
     public void OnPointerExit(PointerEventData eventData)
     {
         Debug.Log("You Exit");
         tooltip.HideTooltip();
     }
 
 }

my problem is that it is not detecting the OnPointEnter method and i am not getting my Debug:log if i hover with my mouse above my "Slot" object