老师帮忙排查一下错误，谢谢

Params numeric lots(1); numeric save(20); numeric holdpoint(0.3);//震荡系数在hold之下的时候判定为震荡才开仓 Vars Series<Numeric> upline; Series<Numeric> downline; Series<Numeric> midline; Series<Numeric> upline_; // 中间线 Series<Numeric> downline_; //中间线 Series<Numeric> band; Series<Bool> con1; Series<Bool> con2; Series<Numeric> minpoint; Series<Numeric> avgvlue1; Series<Numeric> avgvlue2; Series<Numeric> hold; Events OnBar(ArrayRef<Integer> indexs) { midline = AverageFC(close,26); band = StandardDev(close,26,2); upline = midline + 2*band; downline =midline -2*band; PlotNumeric("upline",highest(upline,3)); PlotNumeric("dowmline",lowest(downline,3)); upline_=Highest(upline,3); downline_=lowest(downline,3); //过滤掉波动大的行情 avgvlue1=AverageFC(close,30); avgvlue2=AverageFC(close,60); hold=Abs(avgvlue1 - avgvlue2)/Close*100; //开仓条件判断 con1=Close[1]<downline_[1] And close >downline_ And Close>Open; con2=close[1]>upline_[1] and Close <upline_ and close <Open; If(MarketPosition<>1 And con1[1] And hold[1]<=holdpoint) //避免未来函数 { Buy(lots,Open); Commentary("多单进场"); } If(MarketPosition <> -1 And con2[1] And hold[1]<=holdpoint) //避免未来函数 { SellShort(lots,Open); Commentary("空单进场"); } If(MarketPosition ==1 and Close[1]<AvgEntryPrice - save*minpoint And BarsSinceEntry>0) { Sell(lots,Open); Commentary("多单止损出场"); } If(MarketPosition==-1 And Close[1]>AvgEntryPrice + save*minpoint And BarsSinceEntry>0) { BuyToCover(lots,Open); Commentary("空单止损出场"); } If(MarketPosition==1 and high[1]>=upline) { sell(0,Open); Commentary("多单出线止盈"); } If(MarketPosition==-1 and low[1]<=downline) { BuyToCover(0,Open); Commentary("空单出现止盈"); }//多单固定止盈 If(MarketPosition==1 And Close[1]>AvgEntryPrice+save*minpoint*1.2 and BarsSinceEntry>0) { sell(0,Open); Commentary("多单止盈出场"); } If(MarketPosition==-1 And Close[1]<AvgEntryPrice-save*minpoint*1.2 and BarsSinceEntry>0) { BuyToCover(0,Open); Commentary("空单止盈出场"); } if(MarketPosition==1 And hold[1]>0.4 and BarsSinceEntry>0 and close[1]<AvgEntryPrice) { sell(lots,Open); Commentary("波动过大，目前亏损状态出场"); } if(MarketPosition==-1 And hold[1]>0.4 and BarsSinceEntry>0 and close[1]>AvgEntryPrice) { BuyToCover(lots,Open); Commentary("波动过大，目前亏损状态出场"); }