My Photon Variable is only owned from MasterClient

I done a script that when the player click on a cube, it counts i++ for that, My idea is that it count how much clicks each players done. But when I click on the scene it just i++ the masterclient variable, it update for all clients but if other client click nothing happens, but if masterclient click all the client variables change.

Here is my script:

 using UnityEngine;
 using System.Collections;
 
 public class ClickToCount : MonoBehaviour
 {
     int clicks;
     int todosClicks;
     public PhotonView photonView1;
 
     PhotonPlayer player;
     public void Awake()
     {
 
         PhotonNetwork.automaticallySyncScene = true;
     
     }
     [PunRPC]
     void OnMouseDown()
     {
         if (transform.gameObject.tag == "Player")
         {
 
             clicks++;
 
         }
     }
 
 
     public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
     {
         if (stream.isWriting)
         {
             stream.SendNext(clicks);
         }
 
         else
         {
             clicks = (int)stream.ReceiveNext();
 
         }
     }
 
     
 
     void OnGUI()
     {
 
       
         foreach (PhotonPlayer bucetao in PhotonNetwork.playerList)
         {
            
             GUILayout.Box(bucetao.name + ":" + clicks);
 
         }
     }
 
   
 
 
 }