Facebook Post-Remove URL not called when app removed -

I'm testing a call that should ping through the post when my Facebook application is removed, but such a Do not think the phone can be called.

By monitoring the network traffic in the firebug and seeing the post made during the deletion of the app, the post did not specify the post setting URL directly in the app settings, nor the post variable according to the document

I have set up a simple output on the specified URL "called the specified page" which I expected to see as a response but not so.

Finally, the URL should delete the deleted database items

I have no evidence that my post-url is being called on to everyone, but more Insight has not been provided.