LuaEventsId.PLAYER_LEVEL_UP Not triggering

The following code using a c# fightclass in dll is not triggering when leveling up. 

public void Initialize() 
{
	EventsLua.AttachEventLua(LuaEventsId.PLAYER_LEVEL_UP, m => SpellBookUpdate()); 
}

private void SpellBookUpdate() 
{
    	Logging.Write("Updating Spell Book!", Logging.LogType.Normal, Color.Crimson);
    	SpellManager.UpdateSpellBook();
      
	CustomClass.ResetCustomClass();
}