I have been working on my pet project and with the help of some monks my project is continue to grow, at last I have a program that actually does what I want, but always a but, is marking me an error everytime it runs, the error is these one :Use of uninitialized value in hash element at test5.pl line 49. I have been reading about the hash and to me the program makes sense to what Ellie Quigley said on the book
can someone see the problem?

this is the code:

#!/usr/bin/perl -w
use warnings;
use strict;
use Tk;

my @banklist = qw(Banamex HSBC Santander Banorte);

my $mw = MainWindow->new();

my %data;

foreach my $bank (@banklist) {
 $data{$bank}{'frame'} = $mw->Frame->pack(-fill=>'x');
 $data{$bank}{'bankname'} = $bank;
 $data{$bank}{'status'} = 'offline';
 $data{$bank}{'label'} = $data{$bank}{'frame'}->Label(
     -textvariable => \$data{$bank}{'bankname'})->pack(-side=>'left');
 $data{$bank}{'entry'} = $data{$bank}{'frame'}->Entry(
     -textvariable => \$data{$bank}{'status'},
     -bg => 'white',
     )->pack(-side=>'right');
}

$mw->repeat(10000, \&CheckForActiveBanks);

sub CheckForActiveBanks
{
  my %statusList = ();

  #-- Reset the list of bank statuses.
  #
  foreach my $bank (@banklist) {
    $statusList{$bank} = 'X';
  }

  #-- Read in the data file.
  #
  open (DAT, "santa1.txt") || die ("No se pudo abrir el archivo");
  my @lines = <DAT>;
  close(DAT);

  #-- Set the status for each bank found in the data file.
  #
  foreach my $lineas (@lines) {
    chomp $lineas;
    my $statuss;
    my $banco;
    ($banco, $statuss) = split(/\|/, $lineas);
    $statusList{$banco} = $statuss;
  }

  #-- Update the data for the list of banks.
  #
  foreach my $bank (@banklist) {
    if ($statusList{$bank} eq "ACTIVO") {
      $data{$bank}{'entry'}->configure(-fg => 'green');
      $data{$bank}{'status'} = 'online';
    }
    else {
      $data{$bank}{'entry'}->configure(-fg => 'red');
      $data{$bank}{'status'} = 'offline';
    }
  }

}

MainLoop;
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