EPS-Strategy-compile-error

CODE:
using WealthLab.Backtest;
using System;
using WealthLab.Core;
using WealthLab.Indicators;
using System.Drawing;
using System.Collections.Generic;
using System.Linq;
using WealthLab.Data;

namespace WealthScript3 
{
   public class RisingEPS : UserStrategyBase
   {
      public RisingEPS()
      {
         AddParameter("Positive EPS...", ParameterType.Int32, 3, 1, 12, 1);
         AddParameter("... in X years", ParameterType.Int32, 1, 1, 4, 1);
      }

      //create indicators and other objects here, this is executed prior to the main trading loop
      public override void Initialize(BarHistory bars)
      {
         _posEpsReqd = Parameters[0].AsInt;
         _howManyYears = Parameters[1].AsInt;

         if (bars.EventDataPoints.Count == 0)
            return;

         //don't process a symbol with no positive earnings
         lstEarnings = bars.EventDataPoints.Where(i => i.Value > 0 && i.Name == "Earnings").ToList();
         if (lstEarnings.Count == 0)
         {
            DrawHeaderText("Activate an event provider with Earnings data and update prior to running this Strategy.", WLColor.Red, 14);
            DrawHeaderText("If Earnings data is available, current symbol hasn't had positive earnings.", WLColor.Orange, 12);
            return;
         }
      }

      //execute the strategy rules here, this is executed once for each bar in the backtest history
      public override void Execute(BarHistory bars, int idx)
      {
         if (!HasOpenPosition(bars, PositionType.Long))
         {
            //list of earnings releases
            var yearAgo = bars.DateTimes[idx].Date.AddYears(-_howManyYears);
            var today = bars.DateTimes[idx].Date;
            if (lstEarnings != null)
            {
               var recentEarnings = lstEarnings.Where(i => i.Date >= yearAgo && i.Date.Date <= today).TakeLast(_posEpsReqd).ToList();

               if (recentEarnings.Count >= _posEpsReqd)
                  PlaceTrade(bars, TransactionType.Buy, OrderType.Market, 0, recentEarnings.Count.ToString());
            }
         }
         else
         {
            int days = 90;
            Position p = LastPosition;
            if (idx + 1 - p.EntryBar >= days)
               ClosePosition(p, OrderType.Market);
         }
      }

      //declare private variables below
      List<EventDataPoint> lstEarnings;
      int _posEpsReqd, _howManyYears;
   }
}