title: Questions about VISSIM COM interface GetQueued method
body: <p>I'm using Python to communicate with the VISSIM traffic simulation software using its COM interface.
  I'm trying to access the GetQueued information of one of my link while running a simulation.</p>
  <pre><code>import win32com.client as com
  vissim_com = com.Dispatch(&quot;Vissim.Vissim&quot;)
  Sim = vissim_com.Simulation
  vissim_com.LoadNet(r'D:\Tracer\labprogramme\vissim\test.inp)
  vnet = vissim_com.net
  links = vnet.Links
  link1 = links.GetLinkByNUmber(1)
  Sim.Period = 3600
  for i in range(3600):
      Sim.RunSingleStep()
      cars = link1.GetVehicles()
      queued_cars = cars.GetQueued()
  </code></pre>
  <p>The last line returns an error</p>
  <pre><code>pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, None, 'Not implemented method called.', 'VISSIMCOM.HLP', 131200, -2147467259), None)
  </code></pre>
  <p>I have no idea for this question, is there anything wrong with my code?</p>