Sum from pages

[Asia001]

Hi,
How copy value from page to next page. I have sum from first page (for example 2) and on next page I have this sum.

first page: second page:
sum previous page: 0 sum previous page: 2
sum this page: 2 sum this page: 8

How copy value 2 from first page to second page?

 

[poujor]

I have created an example that might help you on your way.
Use the Xtreme sample database included with the product. Add the customer table only.
Insert {Customer.Customer name} and {Customer.Last Year's Sales} in the details section.

Create 4 forumlas:

{@init} (insert it in the report header)
WhilePrintingRecords;
global currencyvar addup;
addup:=0;

{@update} (insert it in the details section]
WhilePrintingRecords;
global currencyvar addup;
addup:=addup +{customer.last year's sales}

{@displayPageFooter} (insert it in the page footer)
WhilePrintingRecords;
global currencyvar addup;

{@displayPageheader} (insert it in the page header)
WhilePrintingRecords;
global currencyvar addup;
addup-{customer.last year's sales};

 

[Asia001]

OK! Everything is good when I have data different 0. Whan I have page with all value 0, next page have bad value: sum before page.
What do You think about this?