public void AddCoverageEx(SubjectNode subNode, Req theReqToCover)
{
  try
  {
    /*
     Add all tests under a subject folder to the requirement coverage
     Get a List of all the covering tests that have not run
     */
    int subjectID;
    TDFilter testFilter;
    List covList;
    
    subjectID = subNode.NodeID;
    Debug.Print(subjectID.ToString());

    //  Create the coverage
    theReqToCover.AddCoverageEx(subjectID, (int)tagTDAPI_POS_ORDER.TDPOSITION_LAST);
    theReqToCover.Post();
    testFilter = ((TestFactory)tdConnection.TestFactory).Filter;
    testFilter["TS_EXEC_STATUS"] = "\"No Run\"";
    covList = theReqToCover.GetCoverListByFilter(testFilter.Text, true);
    foreach (ITest aTest in covList)
    {
      Debug.WriteLine(aTest.Name + aTest.ExecStatus + aTest.Type);
    }
  }
  catch (Exception ex)
  {
    //AddCoverageExErr:
    Debug.WriteLine(ex.ToString());
  }
}