Changing CUPS config file for page log format

I am trying to alter the page logging format of CUPS in OS X Server 10.5 by adding a PageLogFormat entry into the cupsd.conf file.

I used the CUPS web interface/Adminstration/Edit Configuration File, put in the PageLogFormat string I want:

PageLogFormat Printer=”%p” Job=”%j” User=”%u” Pages=”%P” Copies=”%C” Time=”%T”

save the changes, restart CUPS, print a test page, look at the log file… but the log’s format never changes. Is cupsd.conf ignored in 10.5 or does the configuration come from another location?