why read action in open graph not submit
===

i have created a app, an object(article) an action(read), and I want to test to publish but i submit alway error. why?

head code

    <head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# article: http://ogp.me/ns/fb/article#">
      <meta property="fb:app_id" content="xxxxxxxxxx" />
      <meta property="og:type" content="article" />
      <meta property="og:url" content="object_url" />
      <meta property="og:title" content="Tachnomo" />
      <meta property="og:description" content="Drive car" />
      <meta property="og:image" content="https://s-static.ak.fbcdn.net/images/devsite/attachment_blank.png" />

and javascript

    <script type="text/javascript">
      function readnews()
      {
          FB.api(
            '/me/news.reads?article=object_url',
            'post',
            function(response) {
               if (!response || response.error) {
                  alert('Error occured');
               } else {
                  alert('Drive was successfully published with ID : ' + response.id);
               }
            });
      }
      </script>

