Column3DGroup Property [Excel 2003 VBA Language Reference]
Returns a ChartGroup object that represents the column chart group on a 3-D chart. Read-only.
Example
This example sets the space between column clusters in the 3-D column chart group to be 50 percent of the column width.
Charts(1).Column3DGroup.GapWidth = 50
Applies to | Chart Object
See Also | ColumnGroups Method