Unity3D Button mouse hover enter and mouse hover exit button events

Requirements

Because Party A's acceptance failed, the project needs to be revised. When modifying the interface, I want to realize the function of displaying the second-level menu by hovering the mouse over the first-level menu. The main picture is as follows

Note that the mouse in the above picture is only hovering over the scene roaming button, and there is no left or right click, etc.

Implementation method

The idea is to let the class inherit the two interfaces of IPointerEnterHandler and IPointerExitHandler, and then implement the methods.
The code is as follows:

using System.span>Collections;using System.Collections.Generic;using UnityEngine;using UnityEngine.UI;using UnityEngine.EventSystems;public class ScentRoamButtonControl : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler{/// 
/// Buttons for all scene walkthrough modules/// public GameObject SceneButtons;public void OnPointerEnter(PointerEventData eventData){//throw new System.NotImplementedException();//Debug.Log("111");SceneButtons.SetActive(true);}public void OnPointerExit(PointerEventData eventData){//throw new System.NotImplementedException();SceneButtons.SetActive(false);}}