老师，帮忙把这个指标改为选股公式，谢谢

改为当白线上穿红线和黄线的时候，作为选股指标，非常感谢。

a:=ema((ema(close,29) ema(close,31) ema(close,33))/3,3),coloryellow;
轴线:ref(a,1)colorred;
aa:ema((ema(c,1) ema(c,3) ema(c,5))/3,3),colorwhite;
bb:=ema((ema(c,29) ema(c,31) ema(c,33))/3,3);
cc:bb-(aa-bb*0.997),coloryellow;
开口值:hhv(aa,1)/llv(cc,1)*100-100,colorgreen,nodraw;