limit only root to can do restart job CUPS

i added this line in cupsd.conf (and delete Restart-Job lines in file and left only this under)

Code:1
<Limit Restart-Job>
2
Require user root
3
Order deny,allow
4
</Limit>Idea is that only root must have access to restart-job, not regular users.
But this is not working, where is mistake..