my $xquery =  '//metadata/audience/@name';# find the first <audience name="xyz">	
my $xquery2 = "//othermeta[\@name = 'plugin.id']/\@content";# find an othermeta with a name = plugin.id and @content 
my $xquery3 = '//@xml:lang'; # find first @xml:lang

my $xparser = XML::LibXML->new();  # create new parser object
     
eval { $xmldoc = $xparser->parse_file($file) };  # trap parsing errors that can't be suppressed normally, like &nbsp; entities
if ($@){
	print "Problems!  \n The error(s):\n$@\n";  
}
			 
if ($pluginname = $xmldoc->findvalue( $xquery2 )){	# returns value of plugin name
	print " Plugin name found: $pluginname\n";
}