把红买绿卖指标改选股预警

编写要求：

AA:=EMA(EMA(CLOSE,30)-EMA(CLOSE,90),5); BB:=(AA-REF(AA,1))*10; CC:=IF(BB>REF(BB,1),BB,REF(BB,1)); STICKLINE(BB>0,0,BB,2,0),COLORRED; STICKLINE(BB<0,0,BB,2,0),COLORGREEN; STICKLINE(CC=BB AND REF(CC,1)>REF(BB,1) AND BB<0,0,BB,1,0),COLORMAGENTA; STICKLINE(CROSS(BB,0),0,BB,1,0),COLORYELLOW; DRAWTEXT(CROSS(BB,0),BB*1.3,''),COLORGREEN; DRAWTEXT(CROSS(0,BB),BB,''),COLORYELLOW; DRAWTEXT(CC=BB AND REF(CC,1)>REF(BB,1) AND BB<0,BB*1.3,''),COLORMAGENTA; DRAWTEXT(CC=BB AND REF(CC,1)>REF(BB,1) AND BB>0,BB*1.4,''),COLORMAGENTA; DRAWTEXT(BB0,BB*1.3,''),COLORRED; 预警条件：出现红中黄柱预警 出现绿柱也预警

解答：

?AA:=EMA(EMA(CLOSE,30)-EMA(CLOSE,90),5);

BB:=(AA-REF(AA,1))*10;