请老师帮忙写一句表达式,谢谢！！

东南小聪明

红面积:IF(DIF>DEA,SUM(MACD,BARSLAST(CROSS(DIF,DEA))),DRAWNULL),NODRAW,COLORLIRED;
绿面积:IF(DIF<DEA,SUM(MACD,BARSLAST(CROSS(DEA,DIF))),DRAWNULL),NODRAW,COLORGREEN;
DRAWNUMBER(CROSS(DIF,DEA),DEA,REF(绿面积,1)),COLORGREEN;
DRAWNUMBER(CROSS(DEA,DIF),DEA*1.1,REF(红面积,1)),COLORLIRED;
DRAWNUMBER(DIF>DEA,MACD,BARSLAST(CROSS(DIF,DEA))+1),COLORRED;
DRAWNUMBER(DIF<DEA,MACD,BARSLAST(CROSS(DEA,DIF))+1),COLORCYAN;

MACD上一次条件成立：绿面积总和除以现在的绿面积的比值，感谢！！

陪练专家

DIF:EMA(CLOSE,12)-EMA(CLOSE,26);
DEA:EMA(DIF,9);
MACD:(DIF-DEA)*2,COLORSTICK;
T:=BARSLAST(CROSS(MACD,0));
T1:=SUMBARS(T=0,2);
红面积:IF(DIF>DEA,SUM(MACD,BARSLAST(CROSS(DIF,DEA))),DRAWNULL),NODRAW,COLORLIRED;
绿面积:IF(DIF<DEA,SUM(MACD,BARSLAST(CROSS(DEA,DIF))),DRAWNULL),NODRAW,COLORGREEN;
DRAWNUMBER(CROSS(DIF,DEA),DEA,REF(绿面积,1)),COLORGREEN;
DRAWNUMBER(CROSS(DEA,DIF),DEA*1.1,REF(红面积,1)),COLORLIRED;
DRAWNUMBER(DIF>DEA,MACD,BARSLAST(CROSS(DIF,DEA))+1),COLORRED;
DRAWNUMBER(DIF<DEA,MACD,BARSLAST(CROSS(DEA,DIF))+1),COLORCYAN;
M1:=REF(绿面积,T+1);
M2:=REF(绿面积,T1);
绿面积比值:IF(ISLASTBAR AND MACD>0,M1/M2,IF(ISLASTBAR AND MACD<0,绿面积/M1,DRAWNULL)),NODRAW;