I do some grid trading research and need buy and sell Quote at the same time

I found some link like

https://www.quantconnect.com/docs/v2/our-platform/live-trading/brokerages/interactive-brokers#03-Financial-Advisors

https://www.quantconnect.com/forum/discussion/1844/does-oanda-s-mutiple-accounts-profiles-feature-s-allow-me-to-run-multiple-algos-at-once/p1

the living mode not test yet

in backtest, i create two InteractiveBrokersOrderProperties and make buy and sell mkt order, unfortunately it do not work just buy and sell use one same profile

order_prop1 = InteractiveBrokersOrderProperties()
order_prop1.FaGroup = 'fag1'
order_prop1.FaMethod = 'EqualQuantity'
order_prop1.FaProfile = "fap1"
order_prop1.Account = 'UA12'


order_prop2 = InteractiveBrokersOrderProperties()
order_prop2.FaGroup = 'fag2'
order_prop2.FaMethod = 'EqualQuantity'
order_prop2.FaProfile = 'fap2'
order_prop3.Account = 'UA11'
self.MarketOrder(symbol, 1000, orderProperties=order_prop1)                
self.MarketOrder(symbol, -1000, orderProperties=order_prop2)