Can't automatically set ticket owner

I’m trying to set a ticket owner automatically. I found this howto
but it doesn’t work:

http://requesttracker.wikia.com/wiki/AutoSetOwnerForQueue

I changed my %owners = ( ‘hardware’ => ‘joe’,); to my queue and user,
but the ticket remains unassigned. I’m not seeing any error messages
in my Apache logs or in my mail.log. How can I see what’s wrong?

I’m using RT 4.0.4, on Ubuntu 12.04 with mod_perl2 and Perl 5.14.2.

Thanks.

Greg Donald