I'm trying to figure out XML::LibXML. It's rough going. I need to be able to access the text content of a node by name. Here is my code:

#!/usr/bin/perl

use strict;
use XML::LibXML;

my $string = qq~<?xml version="1.0"?>
<ItemLookupResponse xmlns="http://webservices.amazon.com/AWSECommerceS
+ervice/2013-08-01">
  <Items>
    <Item>
      <ASIN>B01KI4JSQY</ASIN>
    </Item>
  </Items>
</ItemLookupResponse>
~;

my $parser = XML::LibXML->new->load_xml(string => $string, {no_blanks 
+=> 1});
my $xml = XML::LibXML::XPathContext->new($parser);
$xml->registerNs('x', 'http://webservices.amazon.com/AWSECommerceServi
+ce/2013-08-01');

# Parse items
foreach my $item ($xml->findnodes('/x:ItemLookupResponse/x:Items/x:Ite
+m', $parser)){
        print $item->firstChild->nodeName, "\n";
        print $item->firstChild->toString, "\n";
        print $item->findvalue('ASIN'), "\n";
        print $item->findvalue('./ASIN'), "\n";
        print $item->findvalue('./ASIN', $item), "\n";
}
[download]

Expected result:

ASIN
<ASIN>B01KI4JSQY</ASIN>
B01KI4JSQY
B01KI4JSQY
B01KI4JSQY
[download]

Actual result:

ASIN
<ASIN>B01KI4JSQY</ASIN>
[download]

Probably I'm just misunderstanding something in the docs. But I don't know what it is. I tried $item->findvalue('x:ASIN'), but that threw an error. Please help. I have a family. If I become an alcoholic, they will suffer.