Tips report code

Hi i am trying to generate a report for the servers with the following
(i have been having problems with the total on the report missmatching the tickets )

Credit Sales (including tax) = $$$
Cash Sales (including tax) = $$$
Total Sales = (credit + cash)
Total Tip = (Total Sales * 0.15)
current user transactions
ticket # | Date | Time | User | Total | Tip


so far this is what i have on the tips report

[Server Sales Details: 3,2,3,2,2]
Date:|{DATE}
Server:|{SETTING:CURRENTUSER}
Credit Card: |||${REPORT PAYMENT TOTAL:(PT=Credit Card) AND (TU={SETTING:CURRENTUSER})}
Cash: |||${REPORT PAYMENT TOTAL:(PT=Cash) AND (TU={SETTING:CURRENTUSER})}
Tip:|||${REPORT CALCULATION TOTAL:(CT=Tip) AND (TU={SETTING:CURRENTUSER})}
>TOTAL:|||${REPORT PAYMENT TOTAL:(TU={SETTING:CURRENTUSER})}