not getting the required out put

[rashichauhan]

use strict;
use Data::Dumper;
use Carp;
use WWW::Mechanize;
use WWW::Mechanize::Firefox;

my $address = 'http://emboss.bioinformatics.nl/cgi-bin/emboss/distmat'
+;
my $outfile = "outnewemboss1.htm";
my $file    = "m1.out";



my $mech = WWW::Mechanize->new();

$mech->get($address);
my $outfile = "outnewemboss1.htm";
my $matrix=2;
my $matrix1=2;
my $file = "m1.out";
$mech->form_id('input-form');
$mech->field( 'nucmethod', $matrix);

$mech->field( 'protmethod', $matrix1);
$mech->field( 'sequence.file', $file);




$mech->set_fields(
        
       
        'sequence.file'   => $file,
        'nucmethod'=>$matrix,

       ' protmethod' => $matrix1
);
print $matrix,$matrix1;
print $file;
$mech->submit;

my $output_page = $mech->content();
open(OUTFILE, ">$outfile");
print OUTFILE "$output_page";
close(OUTFILE);

I have written this code for connecting to emboss distmat and input the msa file and then get the distance matrix file.But the problem is that when I am running the code "same emboss distmat page is opening" .Out put page is not opening.I check all the fields in the source page.Plz help me.