title: Custom secure page tab url so as to provide different iframe to each page tab for different page
body: <p>I have created an app on facebook developer account and need to provide custom iframe to each page tab of the pages. I have no clue how to do that.</p>
  
  <p>I simple words, I need to provide different url (depending upon certain parameters) for iframe of page tab of each page that have installed my app (NOT MY SECURE PAGE TAB URL).</p>
  
  <p>The default iframe url that will be loaded if someone installs my app is the one that I have mentioned in my SECURE PAGE TAB URL field. But I need to provide a different iframe url depending upon certain conditions. So, not my secure page tab url.
  How to do that?</p>