How to: Change a Legend Label (Report Builder 1.0)
The legend label indicates what the data series represents. By default, Report Builder uses the field name as the legend label.
To change a legend label
In Report Builder design mode, right-click anywhere on the chart.
Point to Data Series, and click Format Data Series for the data series that you want to change. The Format Data Series dialog box is displayed.
Each data series in the chart is displayed in the Format Data Series list.
In the Legend label box, enter the new label text.
The new label for the data series is displayed in the chart legend.