Represents all the data labels for a series. You cannot apply a custom format to a single data label; formats apply to all data labels for the series.
Using the WCDataLabels Object
Use the Add method of the WCDataLabelsCollection object to add data labels to a series.
The following property and method return a WCDataLabels object.
The WCDataLabelsCollection object’s Add method
The WCDataLabelsCollection object’s Item property