title: Logic app(azure) trigger does not give tracking id
body: <p>I am working on a logic app in azure. I have created a custom api app that receives Tracking id as input and does . Now i have 5 actions and 1 trigger in my logic app. </p>
  
  <p>I am using Http Listener as my logic app trigger. Now i want to get the tracking id of a particular run and pass that same tracking id into my custom api app as input in the same run.</p>
  
  <p>I Followed the below link and tried to get the tracking Id from the trigger
  <a href="http://blogs.msdn.com/b/logicapps/archive/2015/09/23/adding-insights-and-telemetry-to-logic-apps-through-power-bi.aspx" rel="nofollow">Link to resource</a></p>
  
  <p>I tried the following things in my logic app to get tracking id:
  1) <code>@triggers().trackingId</code> - didnt work
  2)<code>@trigger().trackingId</code> - didnt work
  3)<code>@trigger().trackingid</code> - didnt work
  4)<code>@triggers().trackingid</code> - didnt work
  5)<code>@actions('triggername')</code> - in this case my logic trigger stops working i.e. i cannot trigger my logic app anymore
  6)<code>@triggers()</code> - in this case i get the whole trigger object but do not get tracking id anywhere in the object.</p>
  
  <p>what should i do to achieve what i want in this case ?</p>