Returns the high price of the bar
The range of returned values is not limited by the MaxBarsBack setting. This keyword can return the value of any bar of the data series.
Plot the high price of the current bar
Plot the high price of the previous bar:
Plot1(symbol_high of 1 Bar Ago, "Previous Bar's high");
Plot the high price of two bars ago:
Plot1(symbol_high, "High 2 bars ago");