Android Question Close App message

Sub Activity_KeyPress(KeyCode As Int) As Boolean 'Return True to consume the event
    If KeyCode = KeyCodes.KEYCODE_BACK Then
        CallSubDelayed(Me, "HandleBackKey")
        Return True
    End If
    Return False
End Sub


Sub HandleBackKey
    Dim Answ As Int 
    Dim Txt As String
    Txt = "Do you really want to close the app ?"
    Answ=Msgbox2(Txt,"ATTENTION","Yes","","No",Null)
    If Answ=DialogResponse.POSITIVE Then
         CloseApp
    End If
End Sub

Sub CloseApp
    ' Close DB
    ' Close KeyValueStore
    ExitApplication
End Sub

Sub appclose
    Dim Answ AsInt
    Dim Txt AsString

    Txt = "Do you really want to close the app ?"
    Answ=Msgbox2(Txt,"ATTENTION","Yes","","No",Null)
    Log(Answ)   '<< This logs: -3  even when the message box is showing without selecting a item
    If Answ=DialogResponse.POSITIVE Then
        Log("Exit App")  ' This part of the code never gets triggered
        Activity.finish
        Return False
       Else
         Return True
    End If
End Sub

Sub Activity_Keypress (KeyCode As Int) As Boolean

    If KeyCode=KeyCodes.KEYCODE_BACK Then
       appclose
    End If
End Sub

Sub Activity_Create(FirstTime As Boolean)
   
End Sub


Sub appclose As Boolean
  Dim Answ As Int
  Dim Txt As String

  Txt = "Do you really want to close the app ?"
  Answ=Msgbox2(Txt,"ATTENTION","Yes","","No",Null)
  Log(Answ)  '<< This logs: -3  even when the message box is showing without selecting a item
  If Answ=DialogResponse.POSITIVE Then
  Log("Exit App")  ' This part of the code never gets triggered
  Return False
  Else
  Return True
  End If
End Sub

Sub Activity_Keypress (KeyCode As Int) As Boolean
  If KeyCode=KeyCodes.KEYCODE_BACK Then
  Return appclose
  End If
   Return True
End Sub