input length = 10;
def dayHigh = DailyHighLow(AggregationPeriod.DAY).Dailyhigh;
def dayLow = DailyHighLow(AggregationPeriod.DAY).DailyLow;
def dayrange = dayHigh - dayLow;
def AvgRange = average(DayRange, length);
plot ADR_H = open(period = AggregationPeriod.DAY) + (AvgRange/2);
plot ADR_L = open(period = AggregationPeriod.DAY) - (AvgRange/2);