Index: openacs-4/packages/dotlrn-homework/www/file-copy.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/dotlrn-homework/www/file-copy.tcl,v
diff -u -N -r1.3.12.2 -r1.3.12.3
--- openacs-4/packages/dotlrn-homework/www/file-copy.tcl	18 Aug 2014 21:56:33 -0000	1.3.12.2
+++ openacs-4/packages/dotlrn-homework/www/file-copy.tcl	18 Aug 2014 21:58:07 -0000	1.3.12.3
@@ -5,7 +5,7 @@
     @creation-date 14 Nov 2000
     @cvs-id $Id$
 } {
-    file_id:integer,notnull
+    file_id:naturalnum,notnull
 } -validate {
     valid_file -requires {file_id} {
 	if {![fs_file_p $file_id]} {