public static void AddDeath(this PhotonPlayer player, int deathToAddToCurrent) { int current = player.GetDeath(); current = current + deathToAddToCurrent; Hashtable death = new Hashtable(); // using PUN's implementation of Hashtable death[PlayerDeaths.PlayerDeathProp] = current; player.SetCustomProperties(death); // this locally sets the score and will sync it in-game asap. }