Can someone please tell me why this code doesn't print 'Agent proxy is now http://www.proxy.com' when run with the command line perl test.pl -p http://www.proxy.com? It emits a few warnings ("Use of uninitialised value in hash element at C:/Perl/site/lib/LWP/UserAgent.pm line 612") Sorry for the abrupt question, but I'm certain it's something very basic I'm missing here. It's very simple code, and to my mind it should work.

#!/usr/bin/perl -w
use strict;
use warnings;
use Getopt::Std;
use LWP::UserAgent;

my $agent = LWP::UserAgent->new();

my %switches;
getopts('p:', \%switches);

if (exists($switches{p}))
    {
    if ($switches{p})
        {
        $agent->proxy('http', $switches{p});
        }
    else
        {
        $agent->env_proxy();
        }
    }

print "Agent proxy is now ".$agent->proxy;
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--
my @words = grep({ref} @clever);
sub version { print "I cuss your capitalist pig tendencies bad!\n" }