[syslog-ng] does remove_if_older still work?

I have one line in my syslog-ng.conf file, as follows: destination netops { file("/var/log/HOSTS/$HOST" remove_if_older(604800) owner(root) group (root) perm(0644) dir_perm(0700)); }; I'm running version 1.6.7 on Fedora Core 2. I would like to have the files that hit this destination be deleted every 7 days. It does not appear to be working as the files keep growing. Maybe I misunderstood, but this should let the file grow for n seconds, then delete the file and start writing to a new file with the same name, right? I tried setting this to 60 and that made no difference. Any help would be appreciated. Thanks, Chris