Index: lams_monitoring/web/includes/javascript/monitorLesson.js
===================================================================
RCS file: /usr/local/cvsroot/lams_monitoring/web/includes/javascript/monitorLesson.js,v
diff -u -r1.44.2.31 -r1.44.2.32
--- lams_monitoring/web/includes/javascript/monitorLesson.js	25 Apr 2016 09:32:01 -0000	1.44.2.31
+++ lams_monitoring/web/includes/javascript/monitorLesson.js	11 May 2016 10:47:26 -0000	1.44.2.32
@@ -121,7 +121,7 @@
 					$('#imAvailableField').attr({
 						'checked'  : null,
 						'disabled' : 'disabled'
-					});
+					}).change();
 					alert(LABELS.LESSON_PRESENCE_DISABLE_ALERT);
 				}
 			}