Android Question multiline notification do not work

Dim Body As String
    DateTime.DateFormat = "dd/MM/yyyy"
    DateTime.TimeFormat = "hh:mm:ss:SSS"
    Dim Now As Long = DateTime.Now
    Body = DateTime.Date(Now) & " - " & DateTime.Time(Now) & CRLF & Livello
    'nid = nid + 1
    ' scrivo la notifica
    Dim n As Notification = CreateNotification(Body)
    n.Notify(nid)