public static void RegisterListenerCallback(string eventName, UnityAction <UnityAction <int> > listener)
{
if (Instance.callbackEventDictionary.TryGetValue(eventName, out UnityEvent <UnityAction <int> > thisEvent))
{
thisEvent.AddListener(listener);
}
else
{
thisEvent = new CallbackEvent();
thisEvent.AddListener(listener);
Instance.callbackEventDictionary.Add(eventName, thisEvent);
}
}