I have a bit of a strange problem... I have consulted the very useful assistance haukex and others provided on Re^9: Preparing data for Template.

The problem is dereferencing an entry in a hash. At first, I thought it was the trouble I always seem to run into when using references. So, I built some test code to check what I was doing and it works as expected.

use strict;

my $val  = 'A';
my $vars = { 'test' => $val };
reftest('testing', $vars);

sub reftest {
    my ($value, %vars) = @_;
    print "$value\n";
    print $$vars{'test'}."\n";
}

C:\Users\ian\Perl>perl dereference.pl
testing
A
[download]

But the code on the webserver is structured the same. The only difference is that the subroutine is a method in a blessed object...could this really make a difference?

The calling code...

my $vars = { 'testpage' => $data{'testpage'} };
$html->process('index', $vars);
[download]

And the method within the $html object...

sub process {
    my ($self, $disp, %v) = @_;
    my $testpage = $$v{'testpage'};
    print "<h1>".$testpage."</h1>\n";
}
[download]

I have checked the $data{'testpage'} contains the expected data of either 'A' or 'B'.
What is causing the lack of dereferencing or what else could I try to debug this problem?