WHEN-MOUSE-DOUBLECLICK TRIGGER OTHER ORACLE FORMS not work

Hi Expert, 

   Recently, I created the new oracle forms. Then, I want to create the trigger event(WHEN-MOUSE-DOUBLECLICK) will move to other oracle form (inclucde list item value "VIEW") and go to the other form is not work. Here to exmplain my form structue design: (Forms [32 Bit] Version 11.1.2.2.0)

    1. Form 1 (CANVAS2) 

       --LIST ITEM NAME value ('VIEW', 'UPDATE')

       --pass the value ('VIEW', 'UPDATE') to Form 1 (CANVAS51)

       --The action result is ok. 

    2. Form 1 (CANVAS51)

     

     --BLOCKNAME set trigger "WHEN-MOUSE-DOUBLECLICK" (connect to DB table)

     

     -- LIST ITEM NAME value as "UPDATE", and double click the DB record. The function will move to new form (form name:FM_CMX_LOC).