在线求大神解答！！！

Params Numeric Length1(13); Numeric Length2(34); Numeric Length3(89);Vars NumericSeries SAvgValue1; NumericSeries SAvgValue2; NumericSeries SAvgValue3;Begin SAvgValue1 = DEMA(Close,Length1); SAvgValue2 = DEMA(Close,Length2); SAvgValue3 = DEMA(Close,Length3); PlotNumeric(\"DEMA1\",SAvgValue1); PlotNumeric(\"DEMA2\",SAvgValue2); PlotNumeric(\"DEMA3\",SAvgValue3); // 集合竞价和小节休息过滤 If(!CallAuctionFilter()) Return; If(MarketPosition <>1 && SAvgValue1[1] > SAvgValue2[1]> SAvgValue3[1]) { Buy(31,Open); } If(MarketPosition <>-1 && SAvgValue1[1] <SAvgValue2[1]<SAvgValue3[1]) { SellShort(31,Open); } //PlotNumeric(\"PL\",Portfolio_TotalProfit); End第29行显示通不过