$url2=***/index.php?title=ACL&action=submit';
$testagent=LWP::UserAgent->new();
$header=HTTP::Headers->new('wpTextbox1'=>'test');
$headreq=HTTP::Request->new('POST',$url2,$header);
$cjar->add_cookie_header($headreq); #cookie anhängen
$antwort2=$testagent->request($headreq);
print $antwort2->as_string();