My MM / PositionSize Code

There are ways to avoid that, but it requires some programming. One way would be to change it within an indicator and let the system read information from the indicator.

MC can sync the positions, you should use the Async mode and/or assign initial market positions if needed.
You should check it on a demo account first of course, but it's doable.

Regards,
ABCTG

sagetrade 

Can I avoid the system being switched off, if I keep TradeSize as a seperate function and just change the input in there? Can MC sync open positions if I change RiskSize, system is switched off and I switch it on again?