title: migrating facebook send Dialog parameters to openGraph changes
body: <p>I have the following:</p>
  
  <pre class="lang-js prettyprint-override"><code>FB.ui({
    method: 'send',
    to: connectionid,
    name: subject,
    picture: staticurl + 'images/logoformysite.png',
    link: homeurl + '/' + username + '/something=' + var1 +'&amp;somethingelse=' + encodeURI(var2) + '&amp;evenmore=' + encodeURI(var3),
    description: invitemessage,
  });
  </code></pre>
  
  <p>Facebook is informing me this: 
  <code>Send Dialog will use Open Graph meta tags and ignore 'name', 'description', and 'picture' parameters.</code></p>
  
  <p>If the button is showing multiple times on my page with different parameters, how should I set the <code>og.url</code> and <code>og.description</code> properties once on top of the page?</p>