title: Set 'Copy Data' source folder with @item().name in Azure Data Factory
body: <p>I have the following pipeline:
  <a href="https://i.stack.imgur.com/8JqCg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8JqCg.png" alt="enter image description here"></a></p>
  
  <p>Get Metadata1 basically retrieves child items (which is collection of folders i.e. <code>originalFolder1</code>, <code>originalFolder2</code>, etc..).</p>
  
  <p>Inside ForEach1 activity, I put copy data activity.</p>
  
  <p>When defining the source dataset, I would like to use the retrieved folder name as the path. So It would be like this: <code>staticFolder1/staticFolder2/originalFolder1</code>.</p>
  
  <p>I did try using <code>staticFolder1/staticFolder2/@item().name</code> in the folder path but it always throw an error <code>file not found</code></p>
  
  <p>Am I missing something?</p>