Order and limit a detail band

[manuatilomb]

I have a set of data gathered from a set of files that I need to display in a list in a sub-report. The thing is, the list must show only the first 5 values and do it in a bigger to smaller order. Since the information is gathered from a set of files, I can't really give the sub-report the set of data ready to print.

Is there a way to configure the detail band or format the incoming data set to show only the five highest values?

[manuatilomb]

I found a way to limit the amount of values. Just put "$V{REPORT_COUNT}<N" where N is the amount of rows into the detail band's "Print When Expression"