Index: openacs-4/packages/xowf/tcl/xowf-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowf/tcl/xowf-procs.tcl,v
diff -u -N -r1.28.2.15 -r1.28.2.16
--- openacs-4/packages/xowf/tcl/xowf-procs.tcl	23 Jul 2019 17:20:17 -0000	1.28.2.15
+++ openacs-4/packages/xowf/tcl/xowf-procs.tcl	1 Oct 2019 20:03:56 -0000	1.28.2.16
@@ -1699,7 +1699,7 @@
       # If these values are not set, try to obtain it the old-fashioned way.
       #
       if {$parent_id == 0} {
-        set parent_id [:query_parameter "parent_id" [$package folder_id]]
+        set parent_id [:query_parameter "parent_id:integer" [$package folder_id]]
       }
       if {$name eq ""} {
         set name [:property name ""]