.
Description
Sets or returns a range formula that determines the size of the bubbles in a bubble chart.
C#
vb.net
Remarks
If this property is not set, then bubbles will have their default size of 0, and will not be visible. You will need to set this property in order for a new bubble series to have visible bubbles. The range of cells referenced by this property should contain the values to use for the bubbles sizes. For example, if it points to the range A1:A4, then the first four bubbles in the series will have a size corresponding to the values in those four cells.
Returns null if the chart is not a bubble chart.