代码在编译时总是提示begin-end不匹配

//------------------------------------------------------------------------// 简称：TrendFollowing// 类型：自动交易策略// 版本：v2.2（符合TB事件驱动模型）//------------------------------------------------------------------------Params Numeric FastLength(5); Numeric SlowLength(20); Numeric ATRLength(14); Numeric StopLossK(2); Numeric TakeProfitK(3); Vars Series<Numeric> MA_Fast; Series<Numeric> MA_Slow; Series<Numeric> ATRVal; Series<Numeric> StopLossPrice(0); Series<Numeric> TakeProfitPrice(0); Series<Numeric> TrueRange; Begin // 指标计算（必须放在OnBar事件外） MA_Fast = AverageFC(Close,FastLength); MA_Slow = AverageFC(Close,SlowLength); // ATR计算（符合TB事件驱动模型） TrueRange = Max(Max(High - Low, Abs(High - Close[1])), Abs(Low - Close[1])); ATRVal = AverageFC(TrueRange, ATRLength); // 事件驱动逻辑 OnBar() { // 开仓信号 If(CrossOver(MA_Fast,MA_Slow) && MarketPosition !=1) { Buy(0,Close); StopLossPrice = Close - StopLossK*ATRVal; TakeProfitPrice = Close + TakeProfitK*ATRVal; } End If If(CrossUnder(MA_Fast,MA_Slow) && MarketPosition !=-1) { SellShort(0,Close); StopLossPrice = Close + StopLossK*ATRVal; TakeProfitPrice = Close - TakeProfitK*ATRVal; } End If // 多头平仓逻辑 If(MarketPosition ==1) { StopLossPrice = Max(StopLossPrice, High[1] - StopLossK*ATRVal); If(Low <= StopLossPrice || High >= TakeProfitPrice) { Sell(0,Min(Open,StopLossPrice)); } End If } End If // 空头平仓逻辑 If(MarketPosition ==-1) { StopLossPrice = Min(StopLossPrice, Low[1] + StopLossK*ATRVal); If(High >= StopLossPrice || Low <= TakeProfitPrice) { BuyToCover(0,Max(Open,StopLossPrice)); } End If } End If }End该代码在编译时总是提示begin-end不匹配，请问大家时怎么回事？可以帮忙完善一下吗？