Android Question Msgbox2Async not shown the message/title

Txt = "Do you really want to delete and create a new case self-analysis ?"
    Msgbox2Async(Txt,"A T T E N T I O N","Yes","","No",Null, True) ' MessageBox
    Wait For Msgbox_Result (Result As Int)
    If Result = DialogResponse.POSITIVE Then
        'Return False ' Return = False the Event will not be consumed
        File.Delete(File.DirInternal, "case_analysis_thoughts.db") ' for testing, removes the database
        ToastMessageShow("Δημιουργήθηκε Φόρμα Νέου Περιστατικού", False)
    Else ' we leave the program
        'Return True ' Return = True the Event will be consumed to avoid
        Return
    End If