Hi,

If I am using Crystal Report 8.5 rpt file with my database files
*.dbf where I add them to the report using ODBC and then
link each dbf files using the Report expert, so
when I want to get a summation of certain fields using the formula below,
it does not display any value at all.

Is there any advise to take note using the formula in CR
compared to Visual basic. I know that with CR, I can actually
had all my calculation and looping done in CR but just can't get it
work, please kindly advise as I don't want to hardcode my application
calculation but want all calculation to be done in the rpt file.


@DisplaySum

Global x1 as Currency
x1 = 0
While {File1.X1} = {File2.X1} and not isNextNull({File1.X1})
x1 = x1 + {File1.X1}
Loop

formula = x1