public static bool RemoveItem(List <ItemInfo> items, ItemInfo target, int index)
        {
            bool result = false;

            if (items != null && target != null)
            {
                if (!(result = BattleEquipTools_op.SubstractItemNum(target)))
                {
                    if (result = BattleEquipTools_op.RemoveItem(items, index))
                    {
                    }
                }
            }
            return(result);
        }