HiLo Range indicator

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

namespace cAlgo
{
    [Levels(0, -100, +100)]
    [Indicator(AccessRights = AccessRights.None)]
    public class mHILOrange : Indicator
    {
        [Parameter("Range Bars (40)", DefaultValue = 40)]
        public int inpRangeBars { get; set; }
        
        [Output("High/Low Range", LineColor = "Black", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries outHILOrange { get; set; }
        
        private IndicatorDataSeries _hh, _ll, _hl, _hlr;
            

        protected override void Initialize()
        {
            _hh = CreateDataSeries();
            _ll = CreateDataSeries();
            _hl = CreateDataSeries();
            _hlr = CreateDataSeries();
        }

        public override void Calculate(int i)
        {
            _hh[i] = i>inpRangeBars ? Bars.HighPrices.Maximum(inpRangeBars) : Bars.HighPrices[i];
            _ll[i] = i>inpRangeBars ? Bars.LowPrices.Minimum(inpRangeBars) : Bars.LowPrices[i];
            _hl[i] = _hh[i] - _ll[i];
            _hlr[i] = _hl[i] != 0 ? (200.0 * (((Bars.HighPrices[i] + Bars.LowPrices[i]) / 2.0) - _ll[i]) / _hl[i]) - 100 : 0;
            
            outHILOrange[i] = _hlr[i];
        }
    }
}