{ Downloaded From https://www.WiseStockTrader.com }
Per1:=Input("lookback",10,100,60);
UB:=Ref((HHV(P,Per1)-Stdev(P,Per1)),-1);
LB:=Ref((LLV(P,Per1)+Stdev(P,Per1)),-1);
MB:=(UB+LB)*.5;
UB;
MB;
LB;