This property affects the value label behavior for stacked series.

• Auto (default setting): the visual will use the True for this setting.
• True: Labels will display cumulative values, including all prior series in the stack. The label values will align with their respective positions on the x-axis. Example – Series 2 label will show Series 1+2 values added together.
• False: Labels will display the value of each series in a stack independently. Example – Series 1 label will show only Series 1 value, and Series 2 label will show only Series 2 value.