As i was telling i didnt have a worthy piece of code yet, but this is what i wrote so far, and when i run this, Mytempoutput file does not have all different meta content from the site.
use LWP::Simple;
use HTML::Parse;
#Parsing the http file for the required fields
$url = 'http://content.karger.com/ProdukteDB/produkte.asp?Aktion=ShowA
+bstract&ArtikelNr=6735&Ausgabe=224691&ProduktNr=223832';
$url =~ s/&/=/g ;
my @url_mod = split('=', $url);
#checking for url and increasing article no.
if ($url_mod[5] = 224691)
{
open(Mytempoutput, ">tempoutput.txt");
print Mytempoutput (get $url);
$abs_str="";
$aa[5]= $aa[5]+1;
print $aa[5];
}