Addthis: sharing buttons with custom URL

addthis-customurl.html

<div class="addthis_sharing_toolbox" data-url="http://customurl.com" data-title="customtitle"></div>

<script type="text/javascript">
  var addthis_share = addthis_share || {};
  addthis_share = {
	  passthrough: {
		  twitter: {
			  via: 'twitteraccount',
			  text: 'lorem ipsum'
		  }
	  }
  };
</script>
<script type="text/javascript">
	var addthis_config = addthis_config || {};
	addthis_config.data_track_clickback = false;
	addthis_config.data_track_addressbar = false;
	addthis_config.ui_language = 'fr';
	addthis_config.ui_508_compliant = true;
</script>

Custom URL version: can share an url that is different than the current url
1/ Create an Addthis profile
2/ Addthis services must be configured in the Addthis dashboard https://www.addthis.com/dashboard#gallery