百日内MACD绿柱刚从最长处缩短并KDJ在底下金叉的选股公式

编写要求：

恳求高手老师帮忙编个在百日内MACD绿柱在最长处刚开始缩短,并KDJ在低位要金叉的选股公式.谢谢了!

解答：

ref("macd.macd",1) <0 and ref("macd.macd"=llv("macd.macd",100),1) and "macd.macd">ref("macd.macd",1) and "macd.macd"<0 and cross("kd.k","kd,d");