Synchronize an INT through Photon Pun2

 [PunRPC]
 private void Sink()
 {
         safe = Random.Range(0, 6);
 }
 
 void CallSetting()
 {
         PhotonView PV = GetComponent<PhotonView>();
         PV.RPC("Sink", RpcTarget.All, safe);
 }
 
 private void Update()
 {
         CallSetting();
 }

For some reason, although I think I have coded this correctly the value for safe isnt being synchronized to all clients. I would really appreciate if someone could help me find out the problem.

Also I am getting this error RPC method Sink found on object with PhotonView 1 but has wrong parameters. Implement as Sink(int32). PhotonMessageInfo is optional as final parameter. Return type must be void or IEnumerator (if you enable RunRpcCoroutines)