Real size for Forex Quant1

Hi,



How can I calculate real size for Forext Quant1? If base currency is USD then the real size is 10,000. But what if base currency is JPY? For example, 1 quant for USD/JPY, what should be real size? I’m using IB and autotrading with TradeBullet. and when it got signal to buy 1 quant USD/JPY, it actually bought 10,000 USD/JPY. I don’t think this is right(It’s ok for now since this is paper trading account). Can anyone let me know how to solve this?



Thanks.