How to invite friends in Facebook app with AS3 - facebook

Question

i'm making a Facebook application (Flash) where i must invite friends. Every place i reach i found this piece of code but isn't working for me because result.request_ids is null. I need to know how many friends the user invited!!! Please help!!!
Code:
private function inviteFriends():void{
var dat:Object = new Object();
dat.message = "Let's invite friends for our Super Extra Max Facebook App, more info go to http://blog.ukasz.com";
dat.title = 'Super Extra Max Facebook App';
// filtering for non app users only
dat.filters = ['app_non_users'];
//You can use these two options for diasplaying friends invitation window 'iframe' 'popup'
Facebook.ui('apprequests', dat, onUICallback, 'popup');
}
private function onUICallback(result:Object):void{
if(result == null){
trace('User closed the pop up window without inviting any friends');
return
}
var invitedUsers:Array = new Array();
invitedUsers = result.request_ids as Array;
trace('You Have Invited ', invitedUsers.length,' friends');
//Simple if else if you want user to invite certain amount of friends
if(invitedUsers.length > 1){
trace('GREAT, USER IS GENERATING TRAFFIC');
}else{
trace('No Good, User invited only one friend.');
}
}

Answer 1

function invite(evt:MouseEvent):void
{
var obj:Object =
{
message: "",
title: ""
};
Facebook.ui("apprequests", obj, cbi, "iframe");
}
function cbi(res):void
{
field_txt.appendText(res.request_ids);
}