Update record in Pre-update

Question

Hi all,
I got the master-detail block, where only certain field in child block for which are allow to updated. Hence, i have the update statement in pre-update trigger.
UPDATE OT_PO_ITEM_DEL SET PID_UPD_UID = 'BC'
WHERE PID_PI_SYS_ID = :OT_PO_ITEM.PI_SYS_ID;
:ot_po_item[ block name].pi_sys_id[FK to pid_pi_sys_id]
I am not sure why the above simple statement does not work ? But if I click on the default save button in form. The records being saved however the field i am try to update is not visible from user and I need to pass the default paramenter via pre-update which is without user's entry.
Please helps. Thanks.

Answer 1

May be that:
loop
   v_name := :system.cursor_item;     
   v_r := name_in(v_name);     
   -- you check, you have name item and value
   exit when replace(v_name, 'BLOCK1.', '') = Get_Block_property('BLOCK', Last_Item);     
   next_item; 
end loop;