title: Pass arguments from tinyMCE to tinyMCEPopup
body: <p>How to pass arguments from tinyMCE to tinyMCEPopup?</p>
  
  <p>I saw this solution: <a href="https://stackoverflow.com/questions/5504524/tinymce-pass-value-from-popup">TinyMCE - Pass value from Popup</a></p>
  
  <p>and I'm looking for something else? How do I create a variable in tinyMCE which I can access in tinyMCEPopup?</p>