请高手帮忙把这个通达信的副图公式改写成选股公式，万分感激！！！

Question

DIFF:=EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
低位金叉:=CROSS(DIFF,DEA) AND DIFF<-0.1;
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;

Answer 1

DIFF:=EMA(CLOSE,12)-EMA(CLOSE,27); DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
低位金叉:=CROSS(DIFF,DEA) AND DIFF<-0.1;
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
XG:CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;

(该公式本为选股公式。复制可直接使用）