I want to use PhotonNetwork.plaeyr.customProperties

I am working on a team system for my PUN game and I can't figure out how to use custom poroperties. Here is my code:

 public void JoinSeekers () {
         if (TeamChosen == false) {
             Multiplayer ();
             TeamChosen = true;
             joinh.SetActive(false);
             joins.SetActive(false);
             crosshair.SetActive (true);
             text.SetActive(false);
 
             PhotonNetwork.playerHashtable Team = new Hashtable() {{"Seekers", true}};
             PhotonNetwork.player.SetCustomProperties(Team);
 
             TeamWorkaround();
         }
     }
 
     public void JoinHiders () {
         if (TeamChosen == false) {
             Multiplayer ();
             TeamChosen = true;
             joinh.SetActive(false);
             joins.SetActive(false);
             crosshair.SetActive (true);
             text.SetActive (false);
             PhotonNetwork.player.SetCustomProperties(new ExitGames.Client.Photon.Hashtable {"Hiders", true});
             TeamWorkaround();
         }
     }
 
     void TeamWorkaround () {
         if (PhotonNetwork.player.customProperties["Hiders"] == true) {
             SpawnMyPlayer("Hiders");
         }
 
         if (PhotonNetwork.player.customProperties["Seekers"] == true) {
             SpawnMyPlayer("Seekers");
         }
     }