private void UpgradeRailway()
{
App app = UnityEngine.Object.FindObjectOfType <App>();
Nation player = State.getNations()[app.GetHumanIndex()];
int provIndex = State.getCurrentlySelectedProvince();
assemblyCsharp.Province prov = State.getProvinces()[provIndex];
PlayerPayer.payRailRoad(player, prov);
this.RailroadLevel.text = prov.getInfrastructure().ToString();
AP.text = player.getAP().ToString();
updateSelfProvinceButtons(player, prov);
}