Android Question what to pass to NB6 notification in the activity field when using B4XPages calling NB6.build from a service?

Dim n As NB6
        n.Initialize("default", Application.LabelName, "HIGH").SmallIcon(smiley)
        n.OnlyAlertOnce(True)
        Dim cs As CSBuilder
        n.BigTextStyle("APP NAME", cs.Initialize.BackgroundColor(Colors.Red).PopAll,Message.GetData.Get("msg"))
        Dim notification As Notification = n.Build("APP NAME", "...", "Waiting", Main)
        notification.Notify(2)

B4XPages.GetNativeParent(Me)

Dim Act As Activity = B4XPages.GetNativeParent(Me)

Service.StartForeground(nid, CreateNotification2("Playing ..."))

Sub CreateNotification2(Body As String) As Notification
  
    Dim n As NB6
    Dim Act As Activity = B4XPages.GetNativeParent(Me) ' because we are using B4XPages
  
  
    n.Initialize("default", Application.LabelName, "DEFAULT").AutoCancel(True).SmallIcon(iconx)
    n.Build("Playing", Body, "tag1",Act).Notify(4) 'It will be Main (or any other activity) instead of Me if called from a service.
    return ??????
End Sub