Custom supertrend problem

Hi everyone,

I'm encountering an issue with accessing data from a Supertrend indicator, specifically the "direction" property. For some reason, I keep getting the following error message: "Crashed in Initialize with NullReferenceException: Object reference not set to an instance of an object." What's puzzling is that there are times when I can access the data without any problems, but other times, even without making any changes to the indicator, I encounter this error. Could someone please assist me with this?

Below is the code I'm using:

using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;

namespace cAlgo
{
    [Cloud("Close Up", "Bull Line", Opacity = 0.2, FirstColor = "FF7CFC00")]
    [Cloud("Bear Line", "Close Down", Opacity = 0.2, FirstColor = "Red")]
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class SuperTrendTest : Indicator
    {
        [Parameter("ATR Period", DefaultValue = 13)]
        public int Period { get; set; }

        [Parameter("ATR Multiplier", DefaultValue = 2)]
        public double atrMulti { get; set; }

        [Parameter("ATR Source", DefaultValue = MovingAverageType.Exponential)]
        public MovingAverageType AtrSource { get; set; }

        [Output("Bear Line", LineColor = "A8FF0000", PlotType = PlotType.DiscontinuousLine, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries HighLine { get; set; }

        [Output("Bull Line", LineColor = "877CFC00", PlotType = PlotType.DiscontinuousLine, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries LowLine { get; set; }

        [Output("Close Up", PlotType = PlotType.DiscontinuousLine, LineColor = "Transparent")]
        public IndicatorDataSeries UpClose { get; set; }

        [Output("Close Down", PlotType = PlotType.DiscontinuousLine, LineColor = "Transparent")]
        public IndicatorDataSeries DownClose { get; set; }

        [Output("Direction")]
        public IndicatorDataSeries Direction { get; set; }

        private AverageTrueRange atr;
        private double AtrDistance;

        protected override void Initialize()
        {
            var result = System.Diagnostics.Debugger.Launch();

            // Debug prints to check initialization
            Print("Initializing indicator...");

            atr = Indicators.AverageTrueRange(Period, AtrSource);
            Print("ATR initialized.");

            Direction = CreateDataSeries();
            Print("Direction data series created.");

            Print("Initialization complete.");
        }

        public override void Calculate(int index)
        {
            AtrDistance = atr.Result[index] * atrMulti;

            if (index == 0)
            {
                Direction[index] = Bars.ClosePrices[index] >= Bars.OpenPrices[index] ? 1 : -1;
            }
            else
            {
                if (Direction[index - 1] == 1)
                {
                    if (Bars.ClosePrices[index] < LowLine[index - 1])
                    {
                        Direction[index] = -1;
                    }
                    else
                    {
                        Direction[index] = 1;
                    }
                }
                else if (Direction[index - 1] == -1)
                {
                    if (Bars.ClosePrices[index] > HighLine[index - 1])
                    {
                        Direction[index] = 1;
                    }
                    else
                    {
                        Direction[index] = -1;
                    }
                }
            }

            if (Direction[index] == 1)
            {
                if (LowLine[index - 1] > Bars.LowPrices[index] - AtrDistance)
                {
                    LowLine[index] = LowLine[index - 1];
                }
                else
                {
                    LowLine[index] = Bars.LowPrices[index] - AtrDistance;
                }
                HighLine[index] = double.NaN;
                UpClose[index] = Bars.ClosePrices[index];
                DownClose[index] = double.NaN;
            }
            else if (Direction[index] == -1)
            {
                if (HighLine[index - 1] < Bars.HighPrices[index] + AtrDistance)
                {
                    HighLine[index] = HighLine[index - 1];
                }
                else
                {
                    HighLine[index] = Bars.HighPrices[index] + AtrDistance;
                }
                LowLine[index] = double.NaN;
                DownClose[index] = Bars.ClosePrices[index];
                UpClose[index] = double.NaN;
            }

            // Add debug output
            Print($"Index: {index}, ClosePrice: {Bars.ClosePrices[index]}, Direction: {Direction[index]}, LowLine: {LowLine[index]}, HighLine: {HighLine[index]}, AtrDistance: {AtrDistance}");
        }
    }
}

I've also created a simple cBot just to print the property, but it returns NaN. Here's the cBot code:

using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None, AddIndicators =true)]
    public class MyBot : Robot
    {
        private SuperTrendTest superTrend;
        protected override void OnStart()
        {
            var result = System.Diagnostics.Debugger.Launch();

            if (result is false)
            {
                Print("Debugger launch failed");
            }
            superTrend = Indicators.GetIndicator<SuperTrendTest>(13, 2, MovingAverageType.Exponential);
       
        }

        protected override void OnTick()
        {
            Print(superTrend.Direction.LastValue);
            
            
        }
    }
}

Any help or guidance on resolving this issue would be greatly appreciated.

Thank you in advance!