将副图指标“底部”改成选股公式

编写要求：

VRA:=EMA(100*(C-LLV(LOW,34))/(HHV(H,34)-LLV(LOW,34)),3); 底部:STICKLINE(CROSS(VRA,9),0,5,3.5,0),COLORFF00FF; STICKLINE(CROSS(VRA,9),5,10,2.5,0),COLOR00FFFF; STICKLINE(CROSS(VRA,9),10,15,1.5,0),COLORRED; DRAWTEXT(CROSS(VRA,9),13,'底部'),COLOR00FFFF; IF(底部,3,0),COLOR00FFFF,LINETHICK3;

解答：

?VRA:=EMA(100*(C-LLV(LOW,34))/(HHV(H,34)-LLV(LOW,34)),3);

底部:CROSS(VRA,9);