Custom Class - Why not ExecuteMarketOrder he says...

Hey team, 

This code will get a null pointer exeption on "ExecuteMarketOrder".

Can ExecuteMarketOrder() be called from a custom class like this?

Thank you in advance.

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("Buy", DefaultValue = true)]
        public bool tradeTypeBool { get; set; }

        [Parameter("Vol Qty", DefaultValue = 100000, MinValue = 1000, Step = 1000)]
        public int volQty { get; set; }

        MycBot thisIsMine;

        protected override void OnStart()
        {
            // Put your initialization logic here

            thisIsMine = new MycBot(tradeTypeBool, volQty);
        }

        protected override void OnTick()
        {
            // Put your core logic here
            if (!thisIsMine.running)
            {
                thisIsMine.AmIRunning(this);
            }
        }

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

    public class MycBot : NewcBot
    {
        public bool running;
        private double volume;
        private TradeType tt;

        public MycBot(bool tradeType, int vol)
        {
            running = false;
            volume = (double)vol;
            tt = tradeType == true ? TradeType.Buy : TradeType.Sell;
        }

        public void AmIRunning(Algo algo)
        {
            if (!running)
            {
                algo.Print("I am not running");
                try
                {
                    ExecuteMarketOrder(tt, algo.Symbol, volume);
                } catch (Exception e)
                {
                    algo.Print("{0}", e.StackTrace);
                }
                running = true;
                algo.Print("I am running");
            }
        }
    }
}