How to send FB.AppRequest to a single user rather than opening the friend selection dialog?

Just a simple question. I have got the list of friend ids and populated them in a menu. Now i want to send them a Facebook app request. So when i call FB.AppRequest, on the click of a button associated to that friend id, it of course opens up the list of FB friends and lets me choose and go forward.

The question is , i don’t want to show that dialog of friend selector, instead to directly send the app request to that friend id who’s button is clicked. Any work arounds ?

Looking at the documentation for FB.AppRequest, the 4th parameter is an IEnumerable of facebook IDs representing the friend(s) you want to send the request to.

Only if you keep this collection empty (no specific friends selected), the friend selector dialog is shown.