Compiler-errors-in-C-code

CODE:

using WealthLab.Core;
using WealthLab.Backtest;
using WealthLab.Indicators;

public class EstrategiaCorrigida : UserStrategyBase
{
   public EstrategiaCorrigida() : base()
   {
      StartIndex = 5;
      PositionSize = new ConstantPositionSize(100); // Instância correta
   }

   public override void Execute(BarHistory bars, int bar)
   {
      if (bar != 4) return;

      // Correção na máxima e mínima
      double max = Highest.Series(bars.High, 4)[bar];
      double min = Lowest.Series(bars.Low, 4)[bar];
      double amplitude = max - min;
      double fechamento = bars.Close[bar];

      int totalPos = (int)PositionSize.GetPositionSize(bars, bar);
      int lote70 = (int)(totalPos * 0.7);
      int lote30 = totalPos - lote70;

      if (fechamento > max)
      {
         PlaceTrade(bars, bar, TransactionType.Buy, OrderType.Market, lote70);
         PlaceTrade(bars, bar + 1, TransactionType.Sell, OrderType.Limit, fechamento + amplitude, lote70);
         PlaceTrade(bars, bar + 1, TransactionType.Sell, OrderType.Stop, min, lote70);

         PlaceTrade(bars, bar, TransactionType.Buy, OrderType.Market, lote30);
         PlaceTrade(bars, bar + 1, TransactionType.Sell, OrderType.Limit, fechamento + (amplitude * 2), lote30);
         PlaceTrade(bars, bar + 1, TransactionType.Sell, OrderType.Stop, min, lote30);
      }
      else if (fechamento < min)
      {
         PlaceTrade(bars, bar, TransactionType.Short, OrderType.Market, lote70);
         PlaceTrade(bars, bar + 1, TransactionType.Cover, OrderType.Limit, fechamento - amplitude, lote70);
         PlaceTrade(bars, bar + 1, TransactionType.Cover, OrderType.Stop, max, lote70);

         PlaceTrade(bars, bar, TransactionType.Short, OrderType.Market, lote30);
         PlaceTrade(bars, bar + 1, TransactionType.Cover, OrderType.Limit, fechamento - (amplitude * 2), lote30);
         PlaceTrade(bars, bar + 1, TransactionType.Cover, OrderType.Stop, max, lote30);
      }
   }
}