title: Logic app expression for path to File not working
body: <p>I tried to find documentation in the subject but fell short until now.
  I am trying to use <strong>Logic Apps</strong> in order to update a table when a trigger occurs.</p>
  
  <p><strong>Adding some context:</strong> </p>
  
  <p>In many separate excel online file that are located in different area of Sharepoint, I have one Table in each of those files. Anytime the SQL table is updated, I get the following elements:</p>
  
  <ul>
  <li>Name</li>
  <li>Age </li>
  <li>path_to_doc</li>
  <li>doc_id</li>
  </ul>
  
  <p>Name and Age are element I wish to add in those Excel file.
  path_to_doc is the path to the Excel file that needs to be updated.
  doc_id is the id of the Excel file that needs to be updated.</p>
  
  <p>In the "Add row to a table" action, those are the elements that need to be filled:</p>
  
  <ul>
  <li>Site (Manual no problem, this doesn't change) Document Library
  (Manual no problem, this doesn't change)</li>
  <li>File (this is where I have a first problem: when I do not click
  manually, and try to put either the "path_to_doc" or the "doc_id"
  instead, it doesn't work.</li>
  <li>Table (It seems that I can force it to be Table1), which is fine
  because all my Excel files have the table called Table1</li>
  <li>Arguments (that is Azure understands the Table and is componnents and
  asks you to fill the ones you need to fill, those elements disappear
  when you change from a manual input to an input "path_to_doc" or
  "doc_id").</li>
  </ul>
  
  <p>It throws me an error:<br>
  <strong>ERROR 400</strong>  </p>
  
  <p><a href="https://i.stack.imgur.com/MN3Vn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MN3Vn.png" alt="enter image description here"></a></p>
  
  <p><strong>NOTE:</strong> When I do it manually, it works.</p>
  
  <p>Anyone has experienced this and found a solution?
  Thank you</p>