title: AttributeError: 'list' object has no attribute 'upper' in robot framework
body: <p>My code:</p>
  
  <p>Loop Delete Project</p>
  
  <pre><code> ${fruits}  create list     ['16825', '11209', '16902']
      :FOR    ${project_element}  IN    ${fruits}
       \    Log    Get Text    ${project_element}
  </code></pre>
  
  <p>When i run test suite then the error appear: 
  <a href="https://i.stack.imgur.com/0Mysl.png" rel="nofollow noreferrer">Error image</a></p>