Q2:=(CLOSE-LLV(LOW, 18))/(HHV(HIGH, 18)-LLV(LOW, 18))*100;Q3:=SMA(Q2, 9, 1);Q4:=SMA(Q3, 3, 1);AA:=3*Q3-2*Q4;Q8:=HHVBARS(HIGH, 50);Q10:=(CLOSE-REF(OPEN, Q8))/REF(OPEN, Q8)*100;:OSS(AA, 20) AND Q10<-13;