Menu - Not found [66000-27] in C#

Dear All,

I want to develop add on for my customer to translate SAP To Cambodian. I have list of Cambodian Translation like Adminstration, Inventory....

It has a problem while sdk translate by display "Menu - Not found  [66000-27]". I really don't know why it is like that. Let see my example

- Translate Administration by manual

     SAPbouiCOM.Menus m=SBO_Application.Menus;

      m.Item("3328").String = "សន្និធិ";

     For this one is working fine

- Translate Administration by getting from the list

     SAPbouiCOM.Menus m=SBO_Application.Menus;

            List<view_translation> t = tdata.getKhmer();

            foreach (view_translation v in t)

            {

                m.Item(v.Code).String = v.Name;

            }

view_translation: it is the list of translation that i get from database

v.Code: it stores UID of menu (3328..) and data type is String

v.Name: Cambodian Translation

     For this one, it error     Menu - Not found  [66000-27]

Noted:

- I'm using SAP B1 version 9.0 PL05

-UID: I got from SAP SDK