{优选指标}

A:HHV(LOW,6);X_1:=HHV(LOW,10);REF(X_1,BARSLAST(A<X_1 AND REF(A=X_1,1)));X_2:=HHV(LOW,20);REF(X_2,BARSLAST(A<X_2 AND REF(A=X_2,1)));