❶ 请高手帮忙将通达信副图底顶侦探指标SK下穿SD形成死叉的预警公式！不胜感激！
VAR1:=(2*CLOSE+HIGH+LOW+OPEN)/5;VAR2:=EMA(EMA(EMA(VAR1,4),4),4);SJ:=(VAR2-REF(VAR2,1))/REF(VAR2,1)*100;SD:=MA(SJ,2);SK:=MA(SJ,1);SD>0&&CROSS(SD,SK);