[Xymon] Alert on Log Entry

Hi, is it possible to configure the alerts.cfg file to send an e-mail if a server's particular log has a certain entry?

I have

HOST=server-abc-ge1 MAIL NOC at blah.com SERVICE=log COLOR=red

Can I put something like SERVICE=log:Fail.log="Big-Failure"

Regards,

Nick Pettefar - Xymon Rookie