Changing the group name on a Bar Chart

[wiplash]

Is it possible (how) to change the group name that appears on a bar chart using CR11?

Currently the bar chart appears fine and most group names are ok, but there's one bar showing where the contents of the particular group has a strange name, so therefore I'd like to change it on the chart.

Thanks for any help!

 

[wiplash]

Nevermind, thanks!