message: changed  tag  name in  xml query  file
diff: @@ -92,19 +92,19 @@ void XmlWorker::ParseIONode(const pugi::xml_node &ioNode)
  const pugi::xml_attribute ioName =
  adios2::query::XmlUtil::XMLAttribute("name", ioNode);
  if (m_SourceReader->m_IO.m_Name.compare(ioName.value()) != 0)
  - throw std::ios_base::failure(
  - "invalid query io. Expecting io name = query");
  + throw std::ios_base::failure("invalid query io. Expecting io name = " +
  + m_SourceReader->m_IO.m_Name);
  #endif
  // std::cout<<m_SourceReader.Type()<<std::endl;
  std::map<std::string, QueryBase *> subqueries;
  adios2::Box<adios2::Dims> ref;
  - for (const pugi::xml_node &qNameNode : ioNode.children("name"))
  + for (const pugi::xml_node &qTagNode : ioNode.children("tag"))
  {
  - const pugi::xml_attribute tag =
  - adios2::query::XmlUtil::XMLAttribute("tag", qNameNode);
  - const pugi::xml_node &variable = qNameNode.child("var");
  + const pugi::xml_attribute name =
  + adios2::query::XmlUtil::XMLAttribute("name", qTagNode);
  + const pugi::xml_node &variable = qTagNode.child("var");
  QueryVar *q =
  ParseVarNode(variable, m_SourceReader->m_IO, *m_SourceReader);
  if (ref.first.size() == 0)
  @@ -113,7 +113,7 @@ void XmlWorker::ParseIONode(const pugi::xml_node &ioNode)
  throw std::ios_base::failure("impactible query found on var:" +
  q->GetVarName());
  // std::cout<<" found sub query for: "<<tag.value()<<std::endl;
  - subqueries[tag.value()] = q;
  + subqueries[name.value()] = q;
  }
  const pugi::xml_node &qNode = ioNode.child("query");
  