How to add the previous day close line on Thinkorswim (TOS) charts

Code is below:

#
input aggregationPeriod = AggregationPeriod.DAY;
input length = 1;
input displace = -1;
input showOnlyLastPeriod = no;
plot PrevDayClose;
if showOnlyLastPeriod and !IsNaN(close(period = aggregationPeriod)[-1]) { PrevDayClose = Double.NaN;
} else { PrevDayClose = Highest(close(period = aggregationPeriod)[-displace], length);
}
PrevDayClose.SetDefaultColor(GetColor(9));
PrevDayClose.SetPaintingStrategy(PaintingStrategy.HORIZONTAL);


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