Index: lams_common/src/java/org/lamsfoundation/lams/tool/service/LamsCoreToolService.java
===================================================================
diff -u -r3f60ecf7d3a92231a1089191ae75c68bc66e9595 -r978100626b2227b73e36de98f41834d8b8361263
--- lams_common/src/java/org/lamsfoundation/lams/tool/service/LamsCoreToolService.java	(.../LamsCoreToolService.java)	(revision 3f60ecf7d3a92231a1089191ae75c68bc66e9595)
+++ lams_common/src/java/org/lamsfoundation/lams/tool/service/LamsCoreToolService.java	(.../LamsCoreToolService.java)	(revision 978100626b2227b73e36de98f41834d8b8361263)
@@ -456,7 +456,7 @@
 				activity.getActivityId().toString());
         }
         if ( lessonID != null ) {
-        	WebUtil.appendParameterToURL(url,
+        	url = WebUtil.appendParameterToURL(url,
                		AttributeNames.PARAM_LESSON_ID,
                		lessonID.toString());
         }