if button is pressed unity

                
                        using UnityEngine;
    using System.Collections;
    using UnityEngine.EventSystems;
     
    public class MyButton : MonoBehaviour, IPointerDownHandler, IPointerUpHandler {
     
    public bool buttonPressed;
     
    public void OnPointerDown(PointerEventData eventData){
         buttonPressed = true;
    }
     
    public void OnPointerUp(PointerEventData eventData){
        buttonPressed = false;
    }
    }