請教:畫線的問題

請問:以V1d為1時的low為起點,若要以今日的HIGH為終點畫一線段應如何編寫?
N:10
M:10

V1:=iSLASTbAR;
V2:=REF(H,N)=HHV(H,2*N+1);
V3:=FILTER(V2,N);
V4:=BACKSET(V3,N+1);
V5:=FILTER(V4,N);
V6:=V5 OR V1;
V7:=REF(L,N)=LLV(L,2*N+1);
V8:=FILTER(V7,N);
V9:=BACKSET(V8,N+1);
VA:=FILTER(V9,N);
VB:=VA AND NOT(V5);
VC:=BACKSET(V6,REF(BARSLAST(VB),1)+1);
VD:=VC>REF(VC,1);
VE:=BACKSET(VD,2);
VF:=VE>REF(VE,1);
V10:=BACKSET(VF AND COUNT(V6,REF(BARSLAST(VB),1)+2)=0,REF(BARSLAST(VB),1)+2);
V11:=V10>REF(V10,1);
V12:=BACKSET(V11 AND COUNT(V6,REF(BARSLAST(VB),1)+2)=0,REF(BARSLAST(VB),1)+2);
V13:=V12>REF(V12,1);
V14:=IF(V6,COUNT(VB,REF(BARSLAST(V6),1)+1),0);
V15:=IF(V14=1 AND V6,BARSLAST(VF),0);
V16:=IF(V6 AND REF(L,BARSLAST(VF))>=REF(L,BARSLAST(V11)),BARSLAST(V11),BARSLAST(VF));
V17:=IF(V14=2 AND V6,V16,0);
V18:=IF(V14>=3 AND V6,IF(V6 AND REF(L,V16)>=REF(L,BARSLAST(V13)),BARSLAST(V13),V16),0);
V19:=V15+V17+V18;
V1A:=BACKSET(V6,V19);
V1B:=V1A>REF(V1A,1);
V1C:=BACKSET(V1B,2);
V1D:=V1C>REF(V1C,1);
V1E:=V1D OR V1;
V1F:=BACKSET(V1E,REF(BARSLAST(V6),1)+1);
V20:=V1F>REF(V1F,1);
V21:=BACKSET(V20,2);
V22:=V21>REF(V21,1);
V23:=BACKSET(V22 AND COUNT(V1E,REF(BARSLAST(V6),1)+2)=0,REF(BARSLAST(V6),1)+2);
V24:=V23>REF(V23,1);
V25:=BACKSET(V24 AND COUNT(V1E,REF(BARSLAST(V6),1)+2)=0,REF(BARSLAST(V6),1)+2);
V26:=V25>REF(V25,1);
V27:=IF(V1E,COUNT(V5,REF(BARSLAST(V1E),1)+1),0);
V28:=IF(V27=1 AND V1E,BARSLAST(V22),0);
V29:=IF(V1E AND REF(H,BARSLAST(V22))<=REF(H,BARSLAST(V24)),BARSLAST(V24),BARSLAST(V22));
V2A:=IF(V27=2 AND V1E,V29,0);
V2B:=IF(V27>=3 AND V1E,IF(V1E AND REF(H,V29)<=REF(H,BARSLAST(V26)),BARSLAST(V26),V29),0);
V2C:=V28+V2A+V2B;
V2D:=BACKSET(V1E,V2C);
V2E:=V2D>REF(V2D,1);
V2F:=BACKSET(V2E,2);
V30:=V2F>REF(V2F,1);
DRAWLINE(V1D,L,V30,H,0);
DRAWLINE(V30,H,V1D,L,0);