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Per1:=Input("lookback",10,100,60);
Perc1:=Input("percent uband",.800,.999,.950);
Perc2:=Input("percent lband",1.01,1.2,1.05);
UB:=Ref((HHV(P,Per1)*Perc1),-1);
LB:=Ref((LLV(P,Per1)*Perc2),-1);
MB:=Ref((UB+LB)*.5,-1);
UB;
MB;
LB;