CO-PA : How to define separate value fields for Revenue & Incoming SO

Hello friends,

In CO-PA reports, how can I see separate value fields for Revenue (ERLOS) and "Incoming Sales Order" ? I created a value field for incoming sales order value.

But when I goto customizing for CO-PA, Transfer of Incoming Sales Orders and Transfer of Billing Documents refer to the same tcode KE4I. So its not possible for me to define a condition type to 2 separate value fields.....how can I see both incoming sales order value and revenue (from invoices) together ?

Any advice you can give me would be greatly appreciated.

Cheers

Ken