MACD Clossover Marker

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

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class MACDClossoverMarker : Indicator
    {
        [Parameter("Long Cycle", DefaultValue = 26)]
        public int LongCycle { get; set; }

        [Parameter("Short Cycle", DefaultValue = 12)]
        public int ShortCycle { get; set; }

        [Parameter("Signal Periods", DefaultValue = 9)]
        public int SignalPeriods { get; set; }


        private MacdCrossOver _macd;

        protected override void Initialize()
        {
            // Initialize and create nested indicators
            _macd = Indicators.MacdCrossOver(LongCycle, ShortCycle, SignalPeriods);
        }

        public override void Calculate(int index)
        {
            //ゴールデンクロス
            if (_macd.Histogram[index - 1] < 0 && _macd.Histogram[index] > 0)
            {
                Chart.DrawIcon("poMarker1" + Bars.OpenTimes.Last(0).ToString(), ChartIconType.UpArrow, Bars.OpenTimes.Last(0), Bars.LowPrices.Last(0) - (3 * Symbol.PipSize), "Red");
            }
            else
            {
                Chart.RemoveObject("poMarker1" + Bars.OpenTimes.Last(0).ToString());
            }

            //デッドクロス
            if (_macd.Histogram[index - 1] > 0 && _macd.Histogram[index] < 0)
            {
                Chart.DrawIcon("poMarker2" + Bars.OpenTimes.Last(0).ToString(), ChartIconType.DownArrow, Bars.OpenTimes.Last(0), Bars.HighPrices.Last(0) + (3 * Symbol.PipSize), "Yellow");
            }
            else
            {
                Chart.RemoveObject("poMarker2" + Bars.OpenTimes.Last(0).ToString());
            }
        }
    }
}