Индикаторы в Chart

//Объявляю:
public ChartPanel TradeChartPanel { get; set; }
private ChartIndicatorElement _emaChartElement;
private ExponentialMovingAverage _ema;
public ChartArea CandlesArea { get; set; }
public ChartCandleElement CandlesElem { get; set; }

//Инициализирую:
TradeChartPanel = panel;
TradeChartPanel.IsInteracted = true;

TradeChartPanel.ClearAreas();
TradeChartPanel.FillIndicators();
CandlesArea = new ChartArea();
var yAxis = CandlesArea.YAxises.First();
var xAxis = CandlesArea.XAxises.First();
//yAxis.AutoRange = true;
//TradeChartPanel.IsAutoRange = true;
//TradeChartPanel.IsAutoScroll = true;
TradeChartPanel.AddArea(CandlesArea);
CandlesElem = new ChartCandleElement { FullTitle = "Candles", YAxisId = yAxis.Id, /*XAxisId = xAxis.Id*/};
 TradeChartPanel.AddElement(CandlesArea, CandlesElem, series);

_ema = new ExponentialMovingAverage() { Length = 9 };

_emaChartElement = new ChartIndicatorElement
 {
    DrawStyle = ChartIndicatorDrawStyles.Line,
     AntiAliasing = true,
    StrokeThickness = 1,
    Color = Colors.Blue,
    YAxisId = yAxis.Id,
    // XAxisId = xAxis.Id
 };

TradeChartPanel.AddElement(CandlesArea, _emaChartElement, series, _ema);

//Обрабатываю событие:
protected override void DrawCandle(CandleSeries series, Candle candle)
 {
            Application.Current.Dispatcher.InvokeAsync(() =>
            {

                var dict = new Dictionary<IChartElement, object>
            {
                { CandlesElem, candle },
            };

                if (_emaChartElement != null )
                {
                    dict.Add(_emaChartElement, _ema.Process(candle));                   
                }
TradeChartPanel.Draw(candle.OpenTime, dict);
}
}