请老师编一个cci底背离选股公式！谢谢！

网上公式:

TYP := (HIGH + LOW + CLOSE)/3;
CCI:(TYP-MA(TYP,14))/(0.015*AVEDEV(TYP,14)),COLORRED;
CB:=LLV(CCI,2)>LLV(CCI,7) AND LLV(L,2)<=LLV(L,7);
DRAWTEXT(CB,CCI-10,'B'),COLORGREEN;

选股

TYP := (HIGH + LOW + CLOSE)/3;
CCI:=(TYP-MA(TYP,14))/(0.015*AVEDEV(TYP,14));
CB:LLV(CCI,2)>LLV(CCI,7) AND LLV(L,2)<=LLV(L,7);