title: Areapath is not correct in programmatically generated TFS/VSTS workitem
body: <p>I am trying to create workitem in TFS/VSTS with custom area-path</p>
  
  <p>for example I want to be my  workitem areapath to be "cde" </p>
  
  <p>Area-paths in my project are similar to below</p>
  
  <p><a href="https://i.stack.imgur.com/WSII8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WSII8.png" alt="enter image description here"></a></p>
  
  <p>My patch element for area-path is as below.</p>
  
  <pre><code>{
      "op": "add",
      "path": "/fields/System.AreaPath",
      "value": "VSTS_TFS_Test\abc\cde"
    }
  </code></pre>
  
  <p>I am using batch create method for this hence REST call url is as below</p>
  
  <pre><code>&lt;&lt;my tfs collection url&gt;&gt;/_apis/wit/$batch?api-version=1.0
  </code></pre>
  
  <p>However this always just display project file (VSTS_TFS_Test) as area in work item. Please refer below screen.</p>
  
  <p><a href="https://i.stack.imgur.com/bs7xP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bs7xP.png" alt="enter image description here"></a></p>
  
  <p>I wanted to "cde" to be area in work item. Please provide some guidence to make this possible</p>
  
  <p>references :
  <a href="https://www.visualstudio.com/en-us/docs/integrate/api/wit/work-items" rel="nofollow noreferrer">https://www.visualstudio.com/en-us/docs/integrate/api/wit/work-items</a></p>