Adding a player to a list

Alright so i've been trying for the past couple days to get this to work but with no success. My goal is to add a player to a list when he/she connects. I believe my problem is its not converting right or something any ill post my code below if you need more then what i give just tell me and ill post it.

     [RPC]
         void AddPlayerToList (PhotonPlayer nPlayer)
         {
             joinedlist = true;
             Playerdataclas capture = new Playerdataclas();
             
             capture.networkPlayer = int.Parse(nPlayer.ToString());
             
             PlayerList.Add(capture);
         }