[syslog-ng]end of line character

Hi all, I'm using syslog-ng for quite a while now, and I'm a happy user. However, there's one thing that I can't seem to be getting right: how to filter out messages ending on a specific word, e.g. I would like to ignore all messages that have the string "admin: $" in it (the dollar-sign indicating end-of-line). But the match expression doesn't seem to recognize this end-of-line character, so can anybody tell me how to achieve this? thanx already! Franky