my $parser = XML::LibXML->new();
my $xslt = XML::LibXSLT->new();
my $xmldoc = $parser->parse_string($plain_xml_string1);
my $xsldoc = $parser->parse_string($xslt_string);
my $stylesheet = $xslt->parse_stylesheet($xsldoc);
my $results = $stylesheet->transform($xmldoc);