Index: openacs-4/packages/categories/www/cadmin/trees-code.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/categories/www/cadmin/trees-code.tcl,v
diff -u -r1.1 -r1.2
--- openacs-4/packages/categories/www/cadmin/trees-code.tcl	6 Jun 2005 09:43:47 -0000	1.1
+++ openacs-4/packages/categories/www/cadmin/trees-code.tcl	27 Oct 2014 16:41:14 -0000	1.2
@@ -6,7 +6,7 @@
 
 } {
     {locale ""}
-    tree_id:multiple
+    tree_id:naturalnum,multiple
 }
 
 set user_id [auth::require_login]