Line chart label and legend

[cognos05]

HI,

In line chart I am having values as sales, categories as current fytd months and colors as set of product teams.

now my product teams has

10 - knee & hip as a member and i want this to show as KN&H in the chart legend and label .
similarly there are few more products added as part of set .

Changing the name and label of member is not updating its value in legend and axis.

Can you please help how to set




I am not able ti change it in chart property or the data item itself.