In the chatterbox the OP said he is trying to use XML::Simple as he does not understand XML::Twig. Please allow me to show an XML::Twig example in case he changes his mind. 

use warnings; use strict;
use XML::Twig;
my $twig = XML::Twig->new;
$twig->parse(*DATA);
for my $query ($twig->findnodes("/queries/query")) {
    my $name = $query->field("name");
    my $topN = $query->field("topN");
    print "query name=($name) topN=($topN)\n";
}
__DATA__
<?xml version='1.0'?>
<queries>
    <query>
        <name>topHosts</name>
        <layer>LINK</layer>
        <topN>20</topN>
        <datatype>topHosts</datatype>
        <filter></filter>
    </query>
    <query>
        <name>topHosts</name>
        <layer>LINK</layer>
        <topN>120</topN>
        <datatype>topHosts</datatype>
        <filter></filter>
    </query>
</queries>

[download]

In reply to Re: XML parsing problem by ambrus
in thread XML parsing problem by avi_2009

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.