Getting the error bad volume.

Hi ,

Trying to make a cBot to place a trade at a chosen price , with risk of 1 percent of my account.

I keep getting an error saying "BadVolume"

Here is the code i am using:-

Thank you.

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using System;
using System.Linq;
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 NewcBot : Robot
    {
        [Parameter(DefaultValue = 0.0)]
        public double sellPrice { get; set; }

        [Parameter(DefaultValue = 0.0)]
        public double stopLevel { get; set; }

        [Parameter(DefaultValue = 0.0)]
        public double target { get; set; }

        [Parameter("Account Risk", DefaultValue = 1.0)]
        public double percentRisk { get; set; }

        private double riskPerTrade;

        private double sellLotSize;

        private double distanceInpPipsToStoploss;


 

        protected override void OnStart()
        {

            //----Calculate distance to stop loss in pips------//
            distanceInpPipsToStoploss = stopLevel - sellPrice;

            //----Calculate amount of money to risk on trade----//
            riskPerTrade = Account.Balance * (percentRisk / 100);


            //----Calculate risk about per pip move----//
            sellLotSize = riskPerTrade / distanceInpPipsToStoploss;
        }

        protected override void OnTick()
        {
                       PlaceLimitOrder(TradeType.Sell, Symbol, sellLotSize, target, "selltrade");
        }


        protected override void OnStop()
        {
           
        }

    }
}