Flatten/reverse only one position in portfolio

C2 Software Development
1

Howdy,

I’d like to use Strategy Access API to modify the quantity of just one position in the portfolio. Rather than setting all of the quantities of position as required in setDesiredPositions() , is there an alternative that will allow me to set the quantity for a single symbol and leave the remaining positions constant?

{
“apikey”: “XXX”,
“systemid”: “YYY”,
“positions”: {
“quant”: -1,
“symbol”: “@MNQZ3”,
“typeofsymbol”: “future”,
}
}
}

I have used submit a signal to the buy/sell into the strategy and it allows me to reverse a position that is open. However, sometimes, I have a trigger in my system that sends two buy signals in a row, but to specify the exact max quantity at all times.

{
“apikey”: “XXX”,
“systemid”: “YYY”,
“signal”: {
“action”: “STC”,
“quant”: 1,
“symbol”: “@MNQZ3”,
“typeofsymbol”: “future”,
“market”: 1,
“duration”: “GTC”,
“conditionalUponSignal”: {
“action”: “STO”,
“quant”: 1,
“symbol”: “@MNQZ23”,
“typeofsymbol”: “future”,
“market”: 1,
“duration”: “GTC”
}
}
}

Thanks,

Kelvin