N:=27;
N1:=23;
WR1:100*(HHV(HIGH,N)-CLOSE)/(HHV(HIGH,N)-LLV(LOW,N));
WR2:100*(HHV(HIGH,N1)-CLOSE)/(HHV(HIGH,N1)-LLV(LOW,N1));
IF(WR1<20,WR1,DRAWNULL),COLORGREEN,LINETHICK2;
IF(WR1>80,WR1,DRAWNULL),COLORRED,LINETHICK2;
IF(WR2<20,WR2,DRAWNULL),COLORGREEN,LINETHICK2;
IF(WR2>80 AND WR2<REF(WR2,1),WR2,DRAWNULL),COLORRED,LINETHICK2;
10,DOTLINE;
20,DOTLINE;
80,DOTLINE;