Index: moodle/mod/lamslesson/lib.php
===================================================================
RCS file: /usr/local/cvsroot/moodle/mod/lamslesson/lib.php,v
diff -u -r1.22 -r1.23
--- moodle/mod/lamslesson/lib.php	14 Jan 2016 21:01:49 -0000	1.22
+++ moodle/mod/lamslesson/lib.php	16 Feb 2017 03:29:27 -0000	1.23
@@ -769,7 +769,7 @@
 	}
 	
 	// we are looking for all users assigned in this context or higher
-	if ($usercontexts = get_parent_contexts($context)) {
+	if ($usercontexts = $context->get_parent_context_ids($context)) {
 		$listofcontexts = '('.implode(',', $usercontexts).')';
 	} else {
 		$sitecontext = get_context_instance(CONTEXT_SYSTEM);