Can't Import ZigZag indicator calulation for making the strategy in cbot

I am trying to use this indicator in my script for placing the trade. SwingZigZag Indicator | Algorithmic Forex Trading | cTrader Community

But I am not able to open any trade. What am i missing? Can anyone please suggest me for my below code.

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

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class SwingZigZagStrategy : Robot
    {
        [Parameter("Period", DefaultValue = 20, MinValue = 1)]
        public int Period { get; set; }

        [Parameter("Risk Reward Ratio", DefaultValue = 2)]
        public double RiskRewardRatio { get; set; }

       

        private SwingZigZag zigzag;

        protected override void OnStart()
        {
            zigzag = Indicators.GetIndicator<SwingZigZag>(MarketSeries.High, MarketSeries.Low, Period);
        }

        protected override void OnBar()
        {
            if (Trade.IsExecuting)
                return;

            double lastSwingHigh = zigzag.SwingHigh.Last(1);
            double lastSwingLow = zigzag.SwingLow.Last(1);
            Print(lastSwingLow);
            // Check for short position
            if (!double.IsNaN(lastSwingHigh) && Symbol.Ask < lastSwingHigh)
            {
                double takeProfitPrice = Math.Max(zigzag.SwingLow.Last(2), zigzag.SwingLow.Last(3));
                if (double.IsNaN(takeProfitPrice))
                    return;

                double takeProfitPips = (int)((lastSwingHigh - takeProfitPrice) / Symbol.PipSize) * RiskRewardRatio;
                double stopLossPips = (int)((lastSwingHigh - Symbol.Ask) / Symbol.PipSize);

                ExecuteMarketOrder(TradeType.Sell, SymbolName, 1000, "SwingZigZagStrategy", stopLossPips, takeProfitPips);
            }
            // Check for long position
            else if (!double.IsNaN(lastSwingLow) && Symbol.Bid > lastSwingLow)
            {
                double takeProfitPrice = Math.Max(zigzag.SwingHigh.Last(2), zigzag.SwingHigh.Last(3));
                if (double.IsNaN(takeProfitPrice))
                    return;

                double takeProfitPips = (int)((takeProfitPrice - lastSwingLow) / Symbol.PipSize) * RiskRewardRatio;
                double stopLossPips = (int)((Symbol.Bid - lastSwingLow) / Symbol.PipSize);

                ExecuteMarketOrder(TradeType.Buy, SymbolName, 1000, "SwingZigZagStrategy", stopLossPips, takeProfitPips);
            }
        }

        protected override void OnStop()
        {
            // Put your deinitialization logic here
        }
    }
}