Hello,
How do I display summary on Page header? For example I have following report



AAA
A111       20
A112       10
A113       40
Total AAA   70
BBB
B111       58
B112       30
Total BBB   88
NET        (18)

Now I would like to display this NET (Total BBB-Total AAA) on my report page header.
For this I have formula (@Net) define, so when I drag and drop this net formula (@Net) in page header section it just show me a blank. But if I drop the same net formula (@Net) in the Page Footer area, it displays correct values [(18)]. So the formula is correct but it seems when i drop it in pager header area, Report does not know about those fields? and that's the reason it gives me blank?
Can somebody please help as how do I make this work?

Thanks again..