飞狐箱顶箱底主图指标公式

发一个飞狐的箱顶箱底主图指标，希望对做短线的朋友做参考

N:=13;
A:=HHV(HIGH,N)=HIGH AND HIGH>REF(HIGH,1);A1:=FILTER(A,N-1);
B:=LLV(LOW,N)=LOW AND LOW<REF(LOW,1);B1:=FILTER(B,N-1);
TS1:=BARSLAST(A1);
箱顶:REF(HIGH,TS1)  ,COLORFF00FF, LINETHICK0; 
STICKLINE(1,箱顶,箱顶,7,0),COLORFF00FF;
TS11:=BARSLAST(B1);
箱底:REF(LOW,TS11)  ,COLORFF8080, LINETHICK0;
STICKLINE(1,箱底,箱底,7,0),COLORFF8080;
DRAWICON(CROSS(CLOSE,箱顶),HIGH*1.01,4);
DRAWICON(CROSS(箱底,CLOSE),LOW*0.99,5);
DRAWICON(CROSS(箱顶,CLOSE) AND REF(CLOSE,1)>=箱顶,箱顶,12);