将.波段指标.公式中的(支撑.线)上穿(坐标线50.00)时改选股公式

编写要求：

解答：

网友求助：

RSV := (CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;
K :=SMA(RSV,3,1);
D :=SMA(K,3,1);
J :3*K-2*D;
压力:MA(REF(HHV(J,10),1),2),COLORGRAY;
支撑:MA(REF(LLV(J ,10),1),2),COLORGRAY;
抄底:CROSS(J,支撑),STICK,COLORRED,LINETHICK1;
DRAWTEXT(抄底,支撑,'B'),COLORRED;
追涨:CROSS(J,压力),STICK,COLORMAGENTA,LINETHICK1;
DRAWTEXT(追涨,压力,'B'),COLORMAGENTA;
卖点:CROSS(压力,J),STICK,COLORGREEN;
DRAWTEXT(卖点,压力,'S'),COLORGREEN;