one button to hide and unihed gameobjects

hello everyone, Im new to unity so....

i have a UI button and I want it to hide and unhide a gameobject

here its what i got: I put this code into a empty gameobject and then the gameobject in the button "onclick" and set to my void... a "if" will do the work? but how i cant figure out. thx

 using UnityEngine;
 using System.Collections;
 
 public class hide_manager : MonoBehaviour { 
 
     public void hideunhide()
     {
        GameObject.Find("myhorse").SetActive(false);
     }
 }