FB Feed dialog not asking for user comments ?

Question

Why FB Feed dialog below (iframe solution) is not asking for user comments on dialog, the dialog appears and post is sent

    function callback() {
     alert("Thank you");
    }
    function showFeed() {
    FB_RequireFeatures(["XFBML"], function(){ 
    FB.Facebook.init('kkkc', '/facebook/xd_receiver.htm', null); 
    FB.ensureInit(function() {

    var tpl_data ={"images":[{"src":"logo.gif","href":"kkk"}],"city":" "};
    var user_message_prompt = "What do you think of this ?";
    var user_message = {value: "write your comments here"};tData= {};
    FB.Connect.showFeedDialog(439384, tpl_data, null, null, null, 
    FB.RequireConnect.require, callback,user_message_prompt, user_message);

(added extra null to code, still not working !) NOTE: with Firefox the dialog seem to remain as blank when clicking Next, until closing from upper corner X.

Answer 1

I believe you are missing a parameter. That places your last 4 parameters out of order, which means that Facebook probably isn't receiving your user_message_prompt and user_message properly.

You need an extra 'null' in there for the story_size parameter. Try this:

FB.Connect.showFeedDialog(43932059084, tpl_data, null, null, null,
    FB.RequireConnect.require, null,user_message_prompt, user_message);