bool数据相关

一个简单的布林带，收盘价大于小于判断 上一个 close小于下轨 就xgok=false，为什么图片上处没有赋值; zhonggui = XAverage (Close ,zgs); bzc = StandardDev (Close,zgs); shanggui = zhonggui+bzc*2; xiagui = zhonggui-bzc*2; PlotNumeric(\"上轨\",shanggui); PlotNumeric(\"中轨\",zhonggui); PlotNumeric(\"下轨\",xiagui); If(Close[1]>shanggui And Close[1]>zhonggui ) { sgok=True; xgok=False; zgok=False; } If(Close[1] < xiagui And Close[1] <zhonggui) { xgok=True; sgok=False; zgok=False; } If(sgok And Close[1] <zhonggui And xgok==False) zgok=True; If(xgok And Close[1] >zhonggui And sgok==False) zgok=True; PlotBool(\"上升\",sgok); //PlotBool(\"调整\",zgok); //PlotBool(\"下降\",xgok);