def modify_order_group(self, orderId, entry=None, target=None, stop=None, quantity=None):
        """Modify bracket order

        :Parameters:
            orderId : int
                the order id to modify

        :Optional:
            entry: float
                new entry limit price (for unfilled limit orders only)
            target: float
                new target limit price (for unfilled limit orders only)
            stop: float
                new stop limit price (for unfilled limit orders only)
            quantity : int
                the required quantity of the modified order
        """
        return self.parent.modify_order_group(self, orderId=orderId,
                                              entry=entry, target=target,
                                              stop=stop, quantity=quantity)
Modify bracket order

        :Parameters:
            orderId : int
                the order id to modify

        :Optional:
            entry: float
                new entry limit price (for unfilled limit orders only)
            target: float
                new target limit price (for unfilled limit orders only)
            stop: float
                new stop limit price (for unfilled limit orders only)
            quantity : int
                the required quantity of the modified order