[syslog-ng]MacOS (Darwin) problem with dynamic file naming

[Cary, Kim]

Thanks to the schooling (particulars and tools) from Jeremy Mates we  
now have syslog-ng running. Thanks Jeremy!

destination std {
   
file("/Volumes/syslog/syslog-ng/$HOST/$YEAR/$MONTH/$DAY/ 
$FACILITY_$HOST_$YEAR_$MONTH_$DAY"
         create_dirs(yes) owner("root") group("secsyslogs") perm(0640)  
dir_perm(0750)
      );

Produces files name after the DAY only; all the directories are present  
and autocreated, but facilty, host, year, month are missing from the  
file name. As this seems to be a common example, I'm wondering if there  
is a problem with the system or something in the context of the conf  
file that I have set wrong.

May I have a pointer to investigate from the list members?

Regards,
Kim