[analog-help] Analog

[analog-help]

Hello,             Can someone tell me if it is possible to do the following..I wish to count the number of files preceded with a particular string eg. all files that are requested that begin with the string cars i.e: out of cars1.pdf, cars2.pdf and somethingelse.pdf, the number retrieved would be 2. How may I do this please? I eventually want the numbers on a bar chart output in the report.   Many thanks   Paul.