Photon variable synchronization

Hello, I'm trying to synchronize a variable w$$anonymous$$ch changes whenever one of the players/clients pressed a button.

The problem is that it only works when the First player/Person who creates the room does it, if the second player who joins the created room clicks the buttons it changes the values for $$anonymous$$m and doesn't sync on the other player's pc.

Here's my code so far:

 public float test;
 
 void Update()
     {
         PhotonView photonView = t$$anonymous$$s.photonView;
         photonView.RPC("Test", PhotonTargets.All);
     }
 
 [PunRPC]
     void Test()
     {
         if (Input.GetKeyDown(KeyCode.Alpha0))
         {
             test = 0;
         }
         if (Input.GetKeyDown(KeyCode.Alpha1))
         {
             test = 1;
         }
         if (Input.GetKeyDown(KeyCode.Alpha2))
         {
             test = 2;
         }
         if (Input.GetKeyDown(KeyCode.Alpha3))
         {
             test = 3;
         }
         if (Input.GetKeyDown(KeyCode.Alpha4))
         {
             test = 4;
         }
     }
 
 void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
     {
         if (stream.isWriting)
         {
             stream.SendNext(test);
         }
 
         else
         {
             test = (float)stream.ReceiveNext();
         }
     }