Hello Perl Monks!
I am trying to write a Perl module that generates a UPCE barcode, I have the module and everything installed but when I try to test my code it prints out an error about an unblessed reference. I have never used bless, nor do I quite understand how to use it (yes I know that is bad). Here is the code that I am working with.

  use GD::Barcode::UPCE;
  my $oGdBar = GD::Barcode->new( 'UPCE', $customer{id} );
  if ( !$oGdBar ) {
   display_menu_error("ERROR: $GD::Barcode::errStr \n");
  }
  print "PTN:", $oGdBar->{text}, ":", $oGdBar->{barcode}, "\n";

  #FIXME Prints out an error regarding unblessed referance
  my $output = '/tmp/UPCE.png';
  open my $OUTFILE, '>', $output;
  print {$OUTFILE} $oGdBar->plot->png;
  close {$OUTFILE};
  undef $oGdBar;
  undef $OUTFILE;
  undef $output;
  system "lpr -r $output";

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I tried to follow the example file that was included with the tarbal for the module. The $customer{id} variable contains a string in this form "000-000000".

In reply to Need some help with GD::Barcode::UPCE module by vendion

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