[amibroker] How to use inverse Quotes e.g. Forex USD/JPY => JPY/USD with buyprice

["netolinetoli" <netolinetoli@xxxxxxxxx>]

Hello, I am using the IB TWS and I get the Forex quotes from IB. 
IB delievers these quotes for the Idealpro pairs like USD.JPY =98.23

I created a system and now I want to optimize the system. 
Afterwards this should be traded with Future Options. The future options are only exists for JPY.USD =>0.010179

Therefore I created an inverse 1/close for the plot.
But if I want to optimize this system the buyprice, sellprice, shortprice and coverprice will always be taken from the original quotes even I try to assign the inverse values to buyprice. I found the restrictions on the settings page. But this only allows to change the range to high, low, average...

Is there a way to assign the buyprice, sellprice...
or even better a way to directly use the inverse quotes for calculation. 
Thanks for help
Oliver 



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