How to set Stoploss and take Profit in sample RSI bot

Hi Friends 

I'm would like to set stoploss, takeprofit, open order buy/sell again when reach 70-30 in sample RSI but I'm not understand code , please help me.

below is code sample RSI

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

namespace cAlgo
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class SampleRSIcBot : Robot
    {
        [Parameter("Source")]
        public DataSeries Source { get; set; }

        [Parameter("Periods", DefaultValue = 14)]
        public int Periods { get; set; }

        [Parameter("Quantity (Lots)", DefaultValue = 1, MinValue = 0.01, Step = 0.01)]
        public double Quantity { get; set; }

        [Parameter("Stop Loss (pips)", DefaultValue = 20, MinValue = 1)]
        public int StopLossInPips { get; set; }

        private RelativeStrengthIndex rsi;

        protected override void OnStart()
        {
            rsi = Indicators.RelativeStrengthIndex(Source, Periods);
        }

        protected override void OnTick()
        {
            if (rsi.Result.LastValue < 30)
            {
                Close(TradeType.Sell);
                Open(TradeType.Buy);
            }
            else if (rsi.Result.LastValue > 70)
            {
                Close(TradeType.Buy);
                Open(TradeType.Sell);
            }
        }

        private void Close(TradeType tradeType)
        {
            foreach (var position in Positions.FindAll("SampleRSI", Symbol, tradeType))
                ClosePosition(position);
        }

        private void Open(TradeType tradeType)
        {
            var position = Positions.Find("SampleRSI", Symbol, tradeType);
            var volumeInUnits = Symbol.QuantityToVolume(Quantity);

            if (position == null)
                ExecuteMarketOrder(tradeType, Symbol, volumeInUnits, "SampleRSI");
        }

    }
}