Sort on Shipment Number Switcher in PO details table in iProc doesn't work

Question

The Shipment numbers column of the PO Details table which are a part of
Requisition details page of iProc appear in descending order. We want to sort this in an ascending order, but setting the Sort Allowed property of the field to Yes/Ascending does not give desired result.
First of all, the column is displayed not by "PosShipmentNum" field (rendered False) but by a "ShipNumType" switcher. Setting this switcher's Sort Allowed property Yes/Ascending does not work either. Instead it adds the following code snippet is added to the VO query at runtime:
QRSLT WHERE (PO_LINE_ID in (select po_line_id from PO_DISTRIBUTIONS_ALL pod , po_req_distributions_all pord, po_requisition_lines_all por where pord.DISTRIBUTION_ID = pod.REQ_DISTRIBUTION_ID and pord.requisition_line_id =
por.requisition_line_id and por.requisition_header_id= :1 ) AND
PO_RELEASE_ID is null AND PO_LINE_ID = :2) ORDER BY SHIP_TYPE asc
and gives the following error:
java.sql.SQLException: ORA-00904: "SHIP_TYPE": invalid identifier.
It looks like some code is overwriting the properties set at the page level.
Any pointers on how to sort a switcher field would be very helpful.
Thanks.

Answer 1

Is there any way to make it work on Oracle 9i?
michaels>  select * from v$version
BANNER                                                         
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
PL/SQL Release 9.2.0.8.0 - Production                          
CORE     9.2.0.8.0     Production                                      
TNS for HPUX: Version 9.2.0.8.0 - Production                   
NLSRTL Version 9.2.0.8.0 - Production                          
michaels>  create table persons (
    id  number(9)
       ,surname  varchar2(50)
          ,constraint persons_pk primary key (id)    )
Table created.
michaels>  create or replace type t_number_array as table of number;
Type created.
michaels>  create or replace procedure p_mrgts2 (p_id persons.id%type)
is
   l_ids   t_number_array;
begin
   l_ids := t_number_array (p_id);
   merge into persons p
      using (select * from table (cast (l_ids as t_number_array))) d
      on (p.id = d.column_value)
      when matched then
         update set surname = 'Updated'
      when not matched then
         insert (id, surname) values (d.column_value, 'Inserted');
end p_mrgts2;
Procedure created.
michaels>  exec p_mrgts2(1)
PL/SQL procedure successfully completed.
michaels>  select * from persons
        ID SURNAME                                          
         1 Inserted                                         
1 row selected.