I am working with the following:

TABLE FILE V_PREBUY_PIVOT
SUM
SALES_VOLUME_LBS
BY MATERIAL_GROUP
BY MATERIAL_GROUP_DESC
BY SOLD_TO_NAME
BY SHIP_TO_CITY
BY QTY_SHIPPED
BY OPEN_ORDER_LBS
ACROSS BOOK_MONTH AS ''
ON TABLE SUBHEAD
"PreBuy Info"
FOOTING
"&TDATE"
WHERE MATERIAL_GROUP EQ 'PT' AND
(BOOK_MONTH EQ '200807' OR BOOK_MONTH EQ '200808' OR BOOK_MONTH EQ '200809');
ON TABLE SET NODATA ''
ON TABLE SET PAGE-NUM OFF
ON TABLE ROW-TOTAL AS 'TOTAL'
ON TABLE NOTOTAL
ON TABLE PCHOLD FORMAT HTML
ON TABLE SET HTMLCSS ON
ON TABLE SET STYLE *

BOOK_MONTH will be an parameter by user. I need a ROW for the AVERAGE of SALES_VOLUME_LBS at the end and the following:

ROW TOTAL: QTY_SHIPPED + OPEN_ORDER_LBS
ROW TOTAL: (QTY_SHIPPED + OPEN_ORDER_LBS) - AVE.SALES_VOLUME_LBS

Does anyone have any suggestions?

This message has been edited. Last edited by: Kerry,

Right after your across you can put in one or more COMPUTE statements.
These can access any column in the report.
This BOOK_MONTH parameter however controls how many columns there will be and thus also how to reference them and how to calculate the average of sales.
What you might do is introduce a multi-verb request. The first part of the request would then calculate the avg of sales for the given months by all other fields (except the across) - NOPRINT. The second part of the request will then contain the normal sum by all fields, this time including the across, after which you can do your computes.
So:

TABLE FILE xxxx
SUM AVG.SALES NOPRINT
BY
BY
BY
SUM SALES
BY
BY
BY
ACROSS
COMPUTE RT1/D12.2 = QTY_SHIPPED + OPEN_ORDER_LBS;
COMPUTE RT2/D12.2 = (QTY_SHIPPED + OPEN_ORDER_LBS) - C1;  

C1 in this case is the very first column, not counting the BY's.
This should give you more or less what you're looking for.