Variable_set params = spooler.create_variable_set();
// add order parameters from request xml element /params
SOSXMLXPath xpath = new sos.xml.SOSXMLXPath(new StringBuffer(xml_document));
String xmlParams = xpath.selectDocumentText("//params");
if (xmlParams != null && xmlParams.length() > 0) {
params.set_xml( xmlParams );
}
order.set_params( params );