I'm trying to use the fully qualified domain name in my directory naming structure in a destination function.  Here is what I have:

options {
        dns_cache(yes); (tried without)
        chain_hostnames(no); (tried yes as well)
        keep_hostname(yes); (tried no as well)
        long_hostnames(off); (tried on)
        use_dns(yes); (tried without)
        use_fqdn(yes);
};

Then in the destination I've tried:

destination network_log {
        file("/var/log/syslog-ng/$HOST/$FACILITY.$YEAR$MONTH$DAY"
                owner(root) group(root) perm(0600) dir_perm(0700) create_dirs(yes)
        );
};

and

destination network_log {
        file("/var/log/syslog-ng/$FULLHOST/$FACILITY.$YEAR$MONTH$DAY"
                owner(root) group(root) perm(0600) dir_perm(0700) create_dirs(yes)
        );
};

Neither seems to create a directory with the fqdn, I always end up with the short name. Am I missing something or does this just not work?

Thanks

Rob