Wouldn't grep be what you're after here?

my @users = grep { $_->{'username'} eq $cgi->param('username') @{%{$xm
+l}->{'user'}};
[download]

-----------------------------------------------------
Dr. Michael K. Neylon - mneylon-pm@masemware.com || "You've left the lens cap of your mind on again, Pinky" - The Brain
"I can see my house from here!"
It's not what you know, but knowing how to find it if you don't know that's important