Facebook Post Feed未显示说明

Question

FB.api('/' + pageId + '/feed',
                                'post',
                                {
                                    access_token: pageAccessToken,
                                    message: "Title: " + $("#title").val() + "\nDescription: " + $("#description").val(),
                                    link: shareUrl,
                                    picture: imageUrl,
                                    source: imageUrl,
                                    icon: imageUrl,
                                    name: $("#title").val(),
                                    from: pageId,
                                    caption: $("#description").val(),
                                    description: $("#description").val(),
                                    published: true
                                },
                                function (response) {
                                    //alert(JSON.stringify(response));
                                    finishedPublish++;
                                    if (finishedPublish >= totalPage) {
                                        window.location.href = "/post/Index/?shareImage=" + imageUrl + " &shareUrl=" + shareUrl;
                                    }
                                });

我上面有以下代码，我想弄清楚为什么在帖子被分享时仍然没有显示Facebook描述，并且仍在从共享的链接中获取？