标题：MAcD底背离选股源代码怎么编写。

DIFF:EMA(CLOSE,12) - EMA(CLOSE,26);
DEA:EMA(DIFF,9);
MACD:2*(DIFF-DEA),COLORSTICK;
AB:=REF(DEA,20);
BB:=REF(CLOSE,30);
低值:LLV(DEA,25);
选股:CROSS("KDJ.J","KDJ.D")        AND                "KDJ.D"<30        AND
        DEA>AB                AND                DEA>低值        AND                CLOSE<BB        AND        低值<-0.2,colorred;