Salesforce Lost Opportunity Revenue Values

Dear all, 

i am using the Salesforce Objects Opportunity and Opportunity Product to create some BI reports. 

After some tryouts it works fine. But now i have a problem: i want to get the revenue data for lost Opps in combination with Product Code.

With the won opps i had to change the field from fcur_RevCatVal_Open_c  to fcur_RevCatVal_Won_c and this works. 

But for the lost opps i dont getting the revenue data using either field.  I didn`t found a similar field for lost opps

Can somebody give me a hint what i am missing or which Salesforce Objects , Fields i have to use ?

Kind Regards, 

kismet