Crystal Reports Count if Function in crystal?

Message

   i think i was able to figure it out!!!!!!

in the Main Report: 
 Created a formula as :
    Whileprintingrecords;
     Shared NumberVar TotalPrice := sum(MainReportField.TotalPrice)

in the subReport:
 Created a formula as :
  Whileprintingrecords;
 Shared NumberVar TotalPrice1 := sum(Subreportfield.TotalPrice)

In the Main Report:
created another formula:
WhilePrintingRecords;
Shared NumberVar TotalPrice;
Share Number var Totalprice1;
NumberVar GrandTotal;
GrandTotal := TotalPrice + TotalPrice1;
GrandTotal

Dropped it in the footer and both the main and sub report added up.