my $data = <<EOF;
<?xml version='1.0' standalone='yes'?>
<RULE output_format="pdf" lsog_version="lsog5">
  <SERVICE_REQUEST>
    <SOMETAG min_length="25" max_length="60">Some value</SOMETAG>
    <ANOTHER_TAG min_length="0" max_length="8">another value</ANOTHER_TAG>
  </SERVICE_REQUEST>
</RULE>
EOF
use IO::Scalar;
my $SH = new IO::Scalar \$data;
my $template = $xs->XMLin( $SH );