How to update RTC build engine status from inside a running java build process

Our team intends to invoke a java build process from ANT via the RTC build engine.  We would like to be able to update the status of the build with a very granular detailed status throughout the course of the build process.
To do this I have attempted to use the teamBuildClient.startBuildActivity to substitute for the ANT task "startBuildActivity".  A code snippit appears below.  It compiles properly however I have several questions.

The two lines below are not complete because I don't know how to get the values =>

IProgressMonitor progressMonitor = null;//***Don't know how to get this ***
final String parentId = null;//***Don't know how to get this ***

Please let me know if I am on the right track with this code. 
Also please provide a link to some source example to help me with this.

Thanks

Here is the code:

   private void myTest( String[] args )
   {
      buildResultUUID = args[3];// ***BDE
      System.out.println( "buildResultUUID=" + buildResultUUID );

      repositoryAddress = args[4];// ***BDE
      System.out.println( "repositoryAddress=" + repositoryAddress );

      userId = args[5];// ***BDE
      System.out.println( "userId=" + userId );

      passwordFile = args[6];// ***BDE
      System.out.println( "passwordFile=" + passwordFile );

      final boolean autoComplete = Boolean.parseBoolean( args[7] );// ***BDE
      System.out.println( "autocomplete=" + autocomplete );

      IClientLibraryContext iClientLibraryContext = null;

      TeamBuildClient teamBuildClient = new TeamBuildClient( iClientLibraryContext );

      IBuildResultHandle buildResultHandle = (IBuildResultHandle)IBuildResult.ITEM_TYPE.createItemHandle(
            com.ibm.team.repository.common.UUID.valueOf( buildResultUUID ), null );

      final String label = "This is a status message";

      IProgressMonitor progressMonitor = null;//***Don't know how to get this ***

      final String parentId = null;//***Don't know how to get this ***

      try
      {
         String out = teamBuildClient.startBuildActivity( buildResultHandle, label, parentId, autoComplete,
               progressMonitor );
        
         System.out.println("Output="+out);
      }
      catch (Exception e)
      {
         e.printStackTrace();
      }
  }