编一个（红线金叉白线）预警选股公式

编写要求：

VAR1:=1; VAR2:=((((2*CLOSE)+HIGH)+LOW) / 4); 高位:90,COLORFFFF00; 低位:20,COLORFFFF00; VAR4:=LLV(LOW,5); VAR5:=HHV(HIGH,4); C1:(EMA((((VAR2-VAR4)/(VAR5-VAR4))*100),4)*VAR1),COLORFF00FF; C2:(EMA(((0.667*REF(C1,1))+(0.333*C1)),2)*VAR1),COLORFFFFFF; DRAWICON(CROSS(C1,C2) AND C2>0,C2,1); DRAWICON(CROSS(C2,C1) AND C2<-100,C1,2); DRAWICON(CROSS(C1,C2) AND C2<0,C2,1); DRAWICON(CROSS(C2,C1) AND C2>-100,C1,2); 条件:=CROSS(C1,C2) AND C1<40; 条件0:=CROSS(C2,C1) AND C1>90; TJ1:=CROSS(C1,C2); TJ2:=CROSS(C2,C1); TJ3:=CROSS(C1,C2) AND REF(C1,1)<20; TJ4:=CROSS(C2,C1) AND REF(C1,1)>80; DRAWTEXT(FILTER((REF(条件,1) AND (REF(LOW,1)>LOW OR TJ2)) OR (REF(条件,2) AND (REF(LOW,2)>LLV(LOW,3) OR TJ2)) OR (REF(条件,3) AND (REF(LOW,3)>LLV(LOW,4) OR TJ2)),4),50,'止'),COLORGREEN; DRAWTEXT(条件,20,'买'),COLORWHITE; DRAWTEXT(条件0,85,'卖'),COLORYELLOW; DRAWTEXT(CROSS(C1,75),70,'危险区'),COLORBLUE; DRAWTEXT(TJ3,65,'安'),COLORRED; DRAWTEXT(TJ3,56,'全'),COLORRED; DRAWTEXT(TJ3,47,'买'),COLORRED; DRAWTEXT(TJ4,85,'逃顶'),COLORYELLOW; DRAWTEXT(ISLASTBAR,88,'清仓'),COLORYELLOW; DRAWTEXT(ISLASTBAR,80,'减仓'),COLORYELLOW; DRAWTEXT(ISLASTBAR,50,'控盘'),COLORWHITE; DRAWTEXT(ISLASTBAR,20,'吸筹'),COLORGREEN;

解答：

?VAR1:=1;

VAR2:=((((2*CLOSE)+HIGH)+LOW) / 4);