use strict;
use XML::XPath;

my $xml = '<SuperItem>
 <UserID>1234</UserID>
 <MajorItems>
  <MinorItem>
   <Item>Box</Item>
  </MinorItem>
 </MajorItems>
 <MajorItems>
  <MinorItem>
   <Item>Suitcase</Item>
  </MinorItem>
 </MajorItems>
</SuperItem>
';

my $xp = XML::XPath->new( xml => $xml );

my $path = '/SuperItem/MajorItems[2]/MinorItem';

print $xp->findnodes_as_string($path);


##</code><code>##

<MinorItem>
   <Item>Suitcase</Item>
</MinorItem>