does not debug windows service in vb .net

Question

I follow this question in c# the code that I put in the designer shared sub main was:

  #If DEBUG Then
    Dim servicio As New CopyFileWorkManagerService
    servicio.OnStart(Nothing)
    System.Threading.Thread.Sleep(System.Threading.Timeout.Infinite)
 #Else
      Dim ServicesToRun() As System.ServiceProcess.ServiceBase               
      ServicesToRun = New System.ServiceProcess.ServiceBase() {New Service1} 
      System.ServiceProcess.ServiceBase.Run(ServicesToRun)                   
  #End If

everything debugs well until this line: AddHandler oTimer.Elapsed, AddressOf Me.oTimer_Elapsed

Private Sub New()
     InitializeComponent()

    log4net.Config.XmlConfigurator.Configure()

    oTimer = New Timer(My.Settings.Intervalo)
    Debugger.Break()
    AddHandler oTimer.Elapsed, AddressOf Me.oTimer_Elapsed
End Sub

the method Private Sub oTimer_Elapsed(sender As Object, e As ElapsedEventArgs)

does not debug!!

what I´m doing wrong?