How to hide/show main report footer for a sub report ?

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C#

CrystalReports

Need to hide main report footer for a sub report(having more than one page and need to hide footer for all those pages).And again make it visible for another sub report which also have more than one page (and do the same to all of its pages)

I have tried with formula

WhilePrintingRecords;
Shared BooleanVar SuppressFooter := True;

WhilePrintingRecords;
Shared BooleanVar SuppressFooter := False;

In report footers of these sub reports and it was working fine if sub reports have only one page.

If sub reports have more than one page footer will be displayed (or hided) according to the formula in the last page of that subreport but other pages not like that;-)


Any solution??