The answer is the value of the highest value in a range of the specified series: High, Low, Open, Close or Volume.
Data
Symbol (optional)
The symbol name.
If not specified, the chart symbol is used.
Time Frame (required)
The time frame.
Series (required)
The value you want to compare among bars.
Count (required)
The number of bars to compare since the Start one.
Start (required)
The number of the bar from what the comparison starts.