Cannot display "<" symbol on the Pie Chart's Data label

Hi all,

I am using Xcelsius 2008 and SP3. One of the lables on my Pie chart is "Duration <=7". For some reason Xcelsius does not display the "<" symbol and anything after that. It displays the label as "Duration" when I hover over the pie chart for the data label. It should actually display "Duration <=7".

Any help greatly appreciated.