那位老师帮忙（出现红色箭头（明月照积雪）时）改预警选股

编写要求：

RV:=(CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100; RG:=(CLOSE-LLV(LOW,5))/(HHV(HIGH,5)-LLV(LOW,5))*100; J0:=(HIGH+LOW)/2; QJ:=EMA(J0,3); J1:=IF(CLOSE>QJ,VOL,0); J2:=IF(CLOSE0,100,50,3,0),COLOR990099; STICKLINE(VAR3<0,0,50,3,0),COLOR008800; KK:EMA(SMA(RG,3,1),2),COLORFFFFFF;DD:SMA(KK,3,1),COLOR00FFFF; DRAWTEXT(CROSS(VAR4,VAR5) AND CROSS(KK,DD),10,'明月照积雪'),COLOR00FFFF; STICKLINE(CROSS(VAR4,VAR5) AND CROSS(KK,DD),0,100,1,0),COLORMAGENTA; STICKLINE(VAR4VAR5,VAR5,VAR4,2,0),COLOR0000BB; DRAWICON(CROSS(VAR4,VAR5) AND VAR5<30,2,1); DRAWICON(CROSS(VAR5,VAR4) AND VAR5>30,97,2); 明月照积雪:CROSS(VAR4,VAR5) AND CROSS(KK,DD),NODRAW,COLORMAGENTA; 买:CROSS(VAR4,VAR5) AND VAR5<30,NODRAW,COLORRED;

解答：

?RV:=(CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100;

VAR4:=SMA(RV,3,1);