title: ADF V2 Error the string character '@' at position is not expected
body: <p>This is a double post with MSDN, but didn't get any help there so i'm hoping some expert sees it here.</p>
  
  <p>I started from the example found at <a href="https://docs.microsoft.com/en-us/azure/data-factory/tutorial-incremental-copy-powershell" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/azure/data-factory/tutorial-incremental-copy-powershell</a></p>
  
  <pre><code>"name": "SinkDataset",
      "properties": {
          "type": "AzureBlob",
          "typeProperties": {
              "folderPath": "adftutorial/incrementalcopy",
              "fileName": "@CONCAT('Incremental-', pipeline().RunId, '.txt')", 
              "format": {
                  "type": "TextFormat"
              }
          },
  </code></pre>
  
  <p>My code became</p>
  
  <pre><code>"typeProperties": {
              "fileName": "S1073_PBI_DAY_JUSTIF_VW.csv",
              "folderPath": "@CONCAT('bict2233/data-in/day/', @{dataset().TriggerRunTime})",
              "format": {
                  "type": "TextFormat",
  ....
  </code></pre>
  
  <p>But i'm getting this error</p>
  
  <pre><code>Invoke-AzureRmDataFactoryV2Pipeline : HTTP Status Code: BadRequest
  Error Code: BadRequest
  Error Message: The template validation failed: 'the string character '@' at position '32' is not expected..'.
  Request Id: 55664c55-8a20-403b-9fbf-a4c24166b473
  Timestamp (Utc):12/14/2017 15:37:59
  At C:\ADF\bict2233_A\Powershell\T.ps1:25 char:10
  + $runId = Invoke-AzureRmDataFactoryV2Pipeline -PipelineName "lstgDayJu ...
  +          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      + CategoryInfo          : CloseError: (:) [Invoke-AzureRmDataFactoryV2Pipeline], ErrorResponseExceptio
  </code></pre>
  
  <p>Any idea why ?</p>
  
  <p>Thx</p>