Trading option request, check AccountFreeMargin

Trading option request:


Don't trade when AccountFreeMargin is less than $ XXXX
or
Don't trade when AccountFreeMargin is less than YY %


Situation:
If I create a portfolio as "Trading in parallel", each strategy orders in parallel.
So that it may happen that


1: Because of "Trading In Parallel", it may trade as many as possible.
2: Create a new order.
3: Because of (2), AccountFreeMargin becomes poor and executed Stop Out.
4: Create a new order.
5: Because of (4), AccountFreeMargin becomes poor and executed Stop Out.
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