公式不输出结果

ParamsNumeric Length(9);Numeric SlowLength(3);Numeric SmoothLength(3);VarsSeries jiacha; //价差Events//Bar更新事件函数，参数indexs表示变化的数据源图层ID数组OnBar(ArrayRef indexs){jiacha = Data0.Close - Data1.Close;Range[0:DataSourceSize() - 1]{Numeric HighestValue = HighestFC(jiacha, Length);Numeric LowestValue = LowestFC(jiacha, Length);Numeric k = (jiacha - LowestValue)/(HighestValue-LowestValue)*100;Numeric kValue = SMA(k,SlowLength,1);PlotNumeric("HighestValue",HighestValue);If(k == InvalidNumeric){kValue = 0;}Numeric DValue = SMA(KValue,SmoothLength,1);PlotNumeric("K",KValue);PlotNumeric("D",DValue);PlotNumeric("J",3*KValue - 2*DValue);PlotNumeric("Ref1",20);PlotNumeric("Ref2",80);}}