B4J Question [SOLVED] How to hide Google Maps traffic layer?

Private Sub RemoveTrafficLayer
    ExecuteJS($"
        window.trafficLayer.setMap(null);
    "$)
    TrafficVisibie = False
End Sub

Private Sub AddTrafficLayer
    Dim JSMap As JavaObject = gmap
    Dim r As Reflector
    r.Target = JSMap.GetField("map")
    Dim MapJSName As String = r.GetField("variableName")
    ExecuteJS($"
    if (window.trafficLayer == null)
        window.trafficLayer = new google.maps.TrafficLayer();
window.trafficLayer.setMap(${MapJSName});
"$)
    TrafficVisibie = True 'global boolean variable
End Sub

Private Sub ExecuteJS(js As String)
    Dim javascript As JavaObject
    javascript = javascript.InitializeStatic("com.lynden.gmapsfx.javascript.JavascriptRuntime").RunMethod("getInstance", Null)
    Log(javascript.RunMethod("execute", Array(js)))
End Sub


Private Sub btnToggle_Click
    If TrafficVisibie Then RemoveTrafficLayer Else AddTrafficLayer
End Sub