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 if (Event.SourceType == "GRAY" && Event.Action == "ALARM")
{
  var audioid;
  if (Event.SourceId == "1" || Event.SourceId == "3")
  {
    audioid = "1";
  }
  if (Event.SourceId == "2" || Event.SourceId == "4")
  {
    audioid = "2";
  }
  var str = "OLXA_LINE|"+audioid+"|ARM|";
  var msg = CreateMsg();
  msg.StringToMsg(str);
  NotifyEvent(msg);
}