引用周线最高价写法

Params Vars Series<Numeric> uphand1; Series<Numeric> weekhand; Events OnBar(ArrayRef<Integer> indexs) { if(Weekday==Weekday[1])uphand1=Highest(HighD(0),5); weekhand=Highest(uphand1,3); Commentary("前三周最高="+text(weekhand)); PlotNumeric("3周最高=",weekhand); } 请问求前3周（不含本周）的最高价 这样写为什么不对呢