Paging using Net::LDAP::Control::VLV

Hello all,

I am working on a data grid that displays some information from our directory server.  I am using jQuery Javascript Framework on the front end, that makes an Ajax call to a Perl CGI script on the backend using the Net::LDAP module.  Doing some testing I am able to retrieve some data, but not able to get past the first page of entries.  Could some tell me how to page through using the Net::LDAP::Control::VLV.  I followed the example, but how do I page through using VLV, to get the next set of entries, returned by the directory.

Thanks

#!/usr/bin/perl

use CGI qw(:all);
use CGI::Carp qw(fatalsToBrowser);
use Net::LDAP;
use Net::LDAP::Util qw(ldap_error_text);
use Net::LDAP::Control::Sort;
use Net::LDAP::Constant qw(LDAP_CONTROL_SORTRESULT);
use Net::LDAP::Control::VLV;
use Net::LDAP::Constant qw( LDAP_CONTROL_VLVRESPONSE );
use POSIX qw(ceil);

my $qs = CGI->new;
my $ldap = Net::LDAP->new('myserver.com', port=> '389') || die "Error: $@";

my $pg = $qs->param('page');
my $sidx = $qs->param('sidx');
my $limit = $qs->param('rows');
my $sord = $qs->param('sord');
my $total_pages;

print $qs->header('text/html');

#my $start = $limit*$page - $limit;
#if ($start <0) { $start = 0
; }
# Get the first 30 entries
my $vlv  = Net::LDAP::Control::VLV->new(
           before  => 0,        # No entries from before target entry
           after   => 29,       # 29 entries after target entry
           content => 0,        # List size unknown
           offset  => 1,        # Target entry is the first
         );


my $sort = Net::LDAP::Control::Sort->new( order => "$sidx" );

my @args = ( base     => "OU=my users,DC=abc,DC=com",
             scope    => "subtree",
             filter   => "(&(employeetype=consultant)(divisionname=Information Technology)(objectClass=inetOrgPerson))",
             callback => \&process_entry, # Call this sub for each entry
             control  => [ $vlv, $sort ],
 );

my $mesg = $ldap->search( @args );

my $count = $mesg->count();

print "<p>$count</p>";

# Get VLV response control
my ($resp)  = $mesg->control( LDAP_CONTROL_VLVRESPONSE ) or die;
$vlv->response( $resp );

$vlv->scroll_page( 1 );

#---------------------------
#-
#- Functions
#-
#---------------------------
sub process_entry
{
my ( $mesg, $entry) = @_;

if ( !defined($entry) ) {
      return;
}
        $cn = $entry->get_value('cn');
        print "$cn" . '<br/>';

}