HiLoLines Object [Excel 2003 VBA Language Reference]
Represents the high-low lines in a chart group. High-low lines connect the highest point with the lowest point in every category in the chart group. Only 2-D line groups can have high-low lines. This object isn't a collection. There's no object that represents a single high-low line; you either have high-low lines turned on for all points in a chart group or you have them turned off.
Using the HiLoLines Object
Use the HiLoLines property to return the HiLoLines object. The following example uses the HasHiLowLines property to add HiLowLines to embedded chart one (the chart must be a line chart) on worksheet one. The example then makes the high-low lines blue.
Worksheets(1).ChartObjects(1).Activate ActiveChart.ChartGroups(1).HasHighLowLines = True ActiveChart.ChartGroups(1).HiLoLines.Border.Color = RGB(0, 0, 255)
If the HasHiLoLines property is False, most properties of the HiLoLines object are disabled.
Parent Objects | ChartGroup Object
Child Objects | Border Object