Although I have only tried this using my IG demo account with PRT I have it working with  five major Forex pairs, US Tech 100 (NASDAQ), FTSE 100, and Crude Oil with 0.5 as the size coded into the system. You still use a Position Size of 1 when preparing the system to trade but that get’s overidden.

I will be using this with a live account as soon as my system is ready so I will then be able to confirm if it works correctly then.