// Get helper instance for web forms. This will add the opening form-tag to
// the helper's render cache which is simply a small variable in the class
// BaseHelper.
-$helper = WebFormHelper::createWebFormHelper($this, "todo_profile");
+$helper = ObjectFactory::createObjectByConfiguredName('web_form_helper', array($this, "todo_profile"));
// Pre-fetch field data with a given registry key
$helper->prefetchValueInstance('user');