I have tried to add the future on JPY USD exchange rate, the main information on IB TWS are:
TWS Symbol: JPY
Currency: USD
Multiplier: 12500000
Expiry: 20070618
Increment: .000001
then I have filled in QuoteManager the following values:
PriceScale: 1/1000000 (Increment)
Min.Movement: 1 (Increment)
Big Point Value: 12500000 (Multiplier)
but at the moment QuoteManager don't allows to set in Big Point Value, values greater than 1000000 ! and so I'm unable to set correctly the future.