Looking for a way to be able to compute the gross profit on the fly based on the output BY fields selected but want the computed field to be one of the &Sum Variable output field choices. Can not find a way to add a computed field as a report variable where more than one field choice is selected for the variable sum fields. For the below COMPUTE SALE_COST_PERC, I want it to be part of the &Sum variable. Tried adding it to the metadata as a compute but still won't allow it to be selected. Forced it to "work" by adding COMPUTE SALE_COST_PERC field in the &Sum line which broke the fex but with defaults could get it to select in HTML but it only works when one &Sum field is selected but breaks when multiple fields from the &Sum choices are selected.

TABLE FILE CAR
SUM
&Sum.(AND(,,)).Sum Fields.
COMPUTE SALE_COST_PERC/D12.2% = IF CAR.BODY.SALES EQ 0 THEN 0 ELSE IF CAR.BODY.RETAIL_COST EQ 0 THEN 0 ELSE ( ( ( CAR.BODY.SALES - CAR.BODY.RETAIL_COST ) / CAR.BODY.SALES ) * 100 ); AS 'Sales Cost %'
BY LOWEST &Measure.(BY(,,,)).Measure.
ON TABLE SET PAGE-NUM NOLEAD
ON TABLE SUMMARIZE AS 'TOTAL'

ust a thought as I'm not really sure what you really want: Try putting the fields which you'd like to SUM in a HOLD file (pre-processed) and JOIN to that so that you can use the fields from the HOLD file...

How would you produce the field list for them to select from and then reference that?

I want the compute field to be one of their options to have as an output or not.

For Example:

They can select one or all or combination of sum fields

Revenue
Invoice Cost
Gross Profit
Gross Profit %

As well as they can choose what BY fields they want- one or all or combination

Country
Region
City

How are you able to get the compute Gross Profit % in that selection criteria (i.e. report variable)?