Index: openacs-4/packages/assessment/lib/feedback.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/assessment/lib/feedback.tcl,v
diff -u -r1.8.6.1 -r1.8.6.2
--- openacs-4/packages/assessment/lib/feedback.tcl	18 Aug 2014 20:24:59 -0000	1.8.6.1
+++ openacs-4/packages/assessment/lib/feedback.tcl	18 Aug 2014 20:31:54 -0000	1.8.6.2
@@ -9,9 +9,9 @@
     @arch-tag: 36842c7c-99fa-4d71-904c-814bc3fde60c
     @cvs-id $Id$
 } {
-    assessment_id
-    session_id
-    section_id
+    assessment_id:naturalnum,notnull
+    session_id:naturalnum,notnull
+    section_id:naturalnum,notnull
     {return_p 0}
     section_order:optional
     item_order:optional