Multiple sign-in does not work in Facebook dialog

Question

I am trying to get the following to work, but I have not been successful:

<fb:fbml>
<fb:dialog id="friends_wallpost_dialog" cancel_button=1>
  <fb:dialog-title>Post to your friends Wall</fb:dialog-title>
  <fb:dialog-content>
    <form id="friends_wallpost_form" promptpermission="publish_stream">
      Select friends:
      <fb:multi-friend-input width="250px" border_color="#8496ba"  />
    </form>
</fb:dialog-content>
</fb:dialog>
<a href="#" clicktoshowdialog="friends_wallpost_dialog" style="border-top: solid 1px">Test</a>
</fb:fbml>

A pop-up dialog will appear and multi-user input will be displayed, however I cannot enter anything into the friends selector. I had similar problems with making the multi-user selector work in the form of a request inside a dialog box. What am I doing wrong?

Edit: I tried with and without fb: fbml tags. I am using the FBML canvas page.

Answer 1

I urge you not to use FBML in your application.

We (Facebook), as soon as we can, are able to refuse it.

.

, FBML, .