cBot with Awesome Oscillator and Exponential Moving Average

Trade execution: AO is rising = buy and AO is falling = sell

Filter: I am attempting to add a Exponential Moving Average (Multi Time Frame) as a filter, with the period and timeframe as the parameters

AO = Awesome Oscillator indicator

EMAMTF = Exponential Moving Average (Multi Time Frame) indicator

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 cBotAOEMA : Robot
    {

        [Parameter("Start Time", DefaultValue = "02:00")]
        public string StartTime { get; set; }

        [Parameter("Stop Time", DefaultValue = "22:00")]
        public string StopTime { get; set; }

        [Parameter("Stop Loss", DefaultValue = 10)]
        public int StopLoss { get; set; }

        [Parameter("Take Profit", DefaultValue = 20)]
        public int TakeProfit { get; set; }

        [Parameter("Slippage", DefaultValue = 10)]
        public int Slippage { get; set; }

        [Parameter("Volume In Units", DefaultValue = 1000)]
        public double volumeInUnits { get; set; }

        [Parameter(DefaultValue = 5, MinValue = 1)]
        public int MaxPositions { get; set; }

        [Parameter("AOMTF Timeframe")]
        public TimeFrame AOMTFTimeframe { get; set; }

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

        [Parameter("Source")]
        public DataSeries Source { get; set; }

        private AwesomeOscillator AO;
        private ExponentialMovingAverage EMAMTF;
        private MarketSeries MarketSeriesEMAMTF;


        protected override void OnStart()
        {
            AO = Indicators.AwesomeOscillator();
            EMAMTF = Indicators.ExponentialMovingAverage(Source, Periods);
            MarketSeriesEMAMTF = MarketData.GetSeries(TimeFrame);

        }

        protected override void OnBar()
        {
            if (Positions.Count < MaxPositions)
            {

                var tradingStarts = TimeSpan.ParseExact(StartTime, "hh\\:mm", null);
                var tradingStops = TimeSpan.ParseExact(StopTime, "hh\\:mm", null);
                if (Server.Time.TimeOfDay >= tradingStarts && Server.Time.TimeOfDay < tradingStops)
                }

                    if (Functions.IsRising(AO.Result) && (MarketSeriesEMAMTF.Close.HasCrossedAbove(EMAMTF))
                    {
                        ExecuteMarketOrder(TradeType.Buy, Symbol, volumeInUnits, "cBotAOEMA", StopLoss, TakeProfit, Slippage, "this is a comment");
                    }
                    else if (Functions.IsFalling(AO.Result) && (MarketSeriesEMAMTF.Close.HasCrossedBelow(EMAMTF))
                    {
                        ExecuteMarketOrder(TradeType.Sell, Symbol, volumeInUnits, "cBotAOEMA", StopLoss, TakeProfit, Slippage, "this is a comment");
                    }
              }
         }            
               

Will appreciate fresh eyes on this error:

Thank you

#tradesfae