As teacher not able to see students answers

I found a problem: when a teacher wants to view a students' results answers, an 'Access denied' page comes up. How to reproduce: Log in as Teacher on the demo site: http://dev.opigno.org/ Go to the students' "My results": http://dev.opigno.org/user/2/myresults Click on a 'View answers' link The problem is caused by wrong use of the 'og_quiz_access_my_result' in the og_quiz module: <?php $time_end = db_query('SELECT time_end FROM {quiz_node_results} WHERE result_id = :result_id AND uid = :uid', array(':result_id' => $rid, ':uid' => $user->uid))->fetchField(); ?> It searches for the result_id in combination with the user_id of the current user. But in this case, that is not correct because we are looking for the students' result. The query fails and returns false, so the teacher is never granted to access see the answers. I hope this can be fixed! Thanks!