public void OnStationButtonClick()
 {
     if (btnLabel.text == Garrison && towerBind.AssignNPCStay(npcBind))
     {
         btnLabel.text = Leave;
     }
     else
     {
         if (towerBind.CancelNPCStay(npcBind))
         {
             btnLabel.text = Garrison;
         }
     }
 }