選股:計算上引線比例

您好

我的選股目標是目標是求出近n天上引線高於一定比例的股票

但結果都不太正確

想請問以下語法哪邊有誤

謝謝

input: dayknumber(5,"近n日"),largerratio(0.5,"k棒比例");

input: upperlineratio(2,"上引線長度");

if countif((GetField("High","d")-maxlist(GetField("Close","d"),GetField("open","d")))>absValue(GetField("c","d")-GetField("o","d"))*upperlineratio,dayknumber)>largerratio*dayknumber then ret=1;