Given the following code: 
package SR::Dtest;                              
use strict;
use warnings;
use Tk;
use Tk::widgets;
use base qw(Tk::Frame);                        
Construct Tk::Widget 'Dtest';                    

sub Populate {
  my($self, $args) = @_;             
  $self->SUPER::Populate($args);

  $self->ConfigSpecs(-target => ['PASSIVE','target','Target',4]);
my $optnum = $self->optionGet('Target','Dtest');

  $self->Label(-text=>"var= $optnum")->grid();
  $self->pack;

}

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If done right, I would expect the label to display 'var= 4' (as long as I don't override -target). Instead, I get an error message indicating I'm using an unreferenced variable. What am I doing wrong?

In reply to How to access options to Tk widgets by Spookymonster

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