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Sets or returns whether the data label will contain the bubble size. This will only be displayed in bubble charts.

 public boolean ContainsBubbleSize{ get; set; }

Public Property ContainsBubbleSize() As Boolean

This defaults to false when creating a new Series.
The data label is considered disabled if this and ContainsCategoryName, ContainsSeriesName, ContainsValue, and ContainsValueAsPercentage are all false.
If the series category type is not a bubble chart, this has no effect.