Hi, I want to hit the data of a website. Iam using WWW::Mechanize module. But unable to open the webpage. Unable to set the dynamically generated Hidden paramenters "__EVENTVALIDATION" and "__VIEWSTATE". Below is the code. Please help me.

use WWW::Mechanize;
use strict;


my $url = "http://reports.platou.com/FixtureReport/Pages/TankFixtures.
+aspx";
my $mech = WWW::Mechanize->new();
$mech->get($url);
my $content = $mech->content;
#print $content;
my $form = ( HTML::Form->parse( $mech->content, $url ) );
$form->action("${url}" );
my $req = HTTP::Request->new( GET => "${url}" );
my $res = $mech->request($req);
my @customer_text_inputs =$form->find_input();

my $ViewState = $customer_text_inputs[0]->value; 
my $Validation = $customer_text_inputs[1]->value; 
my $fromDate = $customer_text_inputs[2]->value; 
my $toDate = $customer_text_inputs[3]->value; 

$form->push_input("hidden",
            {
                value => "$ViewState",
                name  => '__VIEWSTATE'
            }
        );

        $form->push_input(
            "hidden",
            {
                value => "$Validation",
                name  => '__EVENTVALIDATION'
            }
        );

                
        $form->push_input(
            "List",
            {
                value => "09-07-2010",
                name  => 'ctl00$contentPlaceHolder$Fixtures$FromDateDr
+opDown'
            }
        );

        $form->push_input(
            "List",
            {
                value => "09-07-2010",
                name  => 'ctl00$contentPlaceHolder$Fixtures$ToDateDrop
+Down'
            }
        );

        
    
        $form->push_input( "hidden", { value => "%", name => "__LASTFO
+CUS" } );
        $form->push_input( "hidden", { value => '', name => "__EVENTTA
+RGET" } );
        $form->push_input( "hidden", { value => "%", name => "__EVENTA
+RGUMENT" } );
        $form->push_input( "hidden", { value => "true", name => "__ASY
+NCPOST" } );


$req = $mech->request($form->click());
print  $req->content;
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