iOS Question Gmap: Polyline not drawn

Sub wegLinie
    gextra.Initialize(gmap)
   
    Dim pl2 As Polyline
    pl2 = gmap.AddPolyline
    Dim  ll4, ll5, ll6, ll7,ll8,ll9,ll10 As LatLng
   
    ll4.Initialize(47.5191458, 7.612324300000001)
    ll5.Initialize(47.5188244, 7.613665999999999)
    ll6.Initialize(47.5195302, 7.614142699999999)
    ll7.Initialize(47.5194594, 7.6184728)
    ll8.Initialize(47.51802000000001, 7.619059999999999)
    ll9.Initialize(47.5133286,7.6207118 )
    ll10.Initialize(47.513098,7.622527 )
    pl2.Points = Array(ll4,ll5,ll6,ll7,ll8,ll9,ll10)
   
    gextra.ZoomToPoints(pl2.Points)
    pl2.Width = 5
    pl2.Color = Colors.Red
   
End Sub