I am having a problem with the following code. It runs but the -text=> \$label is not printing the proper labels. Where am I mistaken?

use Tk;
my $mw = new MainWindow;
my $out_req_frm = $mw -> Frame()->pack();
my $output_lab = $out_req_frm -> Label(-text=>"Select desired output f
+rom the following.",
    -font=>"ansi 10 bold")->pack();
my %chk_;
my %chk;
my %out_req;
my $n = 1;
$out_req1 = '1. Carpet Plot Data';
$out_req2 = "2. Laminate Properties";
$out_req3 = "3. Laminate Stresses";
$out_req4 = "4. Laminate Strains";
$out_req5 = "5. Circumferential and Radial Stresses/Strains";
$out_req6 = "6. Displacements";
$out_req7 = "7. Strains Per Ply";
$out_req8 = "8. Stresses Per Ply";
$out_req9 = "9. Failure Criteria Per Ply";
$out_req10 = "10. Automatic Search for Failure";

do {
    my $row = $n + 1;
    my $label = $out_req{$n};
    print $label;
    $chk_{$n} = $out_req_frm -> Checkbutton(-text=> \$label,
    -variable=> \$chk{$n},
    -offvalue=>"0",
    -onvalue=>"1")->pack();
#$chk_{$n} -> grid(-row=>$row, -column=>1, -sticky=>'w');
    $n = $n + 1;
} until ($n==11);

MainLoop;
[download]

Thank you!