#! /usr/bin/perl -w


use Tk;
use POE qw(Session);

my $main = MainWindow->new(
    -title => "Ein kleiner test"
);

POE::Session->create( 'inline_states' =>
       { '_start' => \&test

       },
          'args' => [ "hi" ],
);

my $text = $main->Label(
    -text => "Jede Sekunde eine neue Zahl",
    -width => 10,
    -height=> 10
)->pack();

sub test {
    for (1..5) {
        sleep(1);
        $text->configure(-text => $_);
    }
}

POE::Kernel->run();

MainLoop;

Can't call method "configure" on an undefined value at poetest.pl line 28.
POE::Kernel's run() method was never called.