[PUN2] Object Active / Not Active

I wondered if I could get some assistance on PUN 2.

I have a script that means when the player presses "D" the object will change (One goes inactive, the other goes active)

 public bool right;
 public bool center;
 
 public GameObject rightobj;
 public GameObject centerobj;

Then on update I have this.

   if (Input.GetKeyDown(KeyCode.D))
             {
 
             if (center == true)
             {
                 if (photonView.IsMine)
                 {
                    
                     centerobj.SetActive(false);
                     rightobj.SetActive(true);
                     right = true;
                     center = false;
                    }
                else
                  {
                    centerobj.SetActive(false);
                     rightobj.SetActive(true);
                 }
 
             }

I have also tried adding this to the bottom of the script.

  public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
     {
         if (stream.IsWriting)
         {
             stream.SendNext(rightobj.activeSelf);
             stream.SendNext(centerobj.activeSelf);
         }
         else if (stream.IsReading)
         {
           
             rightobj.SetActive((bool)stream.ReceiveNext());
             centerobj.SetActive((bool)stream.ReceiveNext());
         }
     }
 }

I have literally no luck. When the player presses "D" the object will change locally but nothing will happen on the "Other Player" end.

Could someone advise a simpler solution if possible?

Thankyou very much