How to edit axis labels in CR charts for crosstab report?

I have a crosstab report created from tha table where column names havie sort order attached to it as 01_Jul FY10, 02_AugFY10 etc and I am able to remove it in format field dialog box using dispaly string formula editor. So I am to display columns in specified order. but when I create chart , axis labels display column name with sort order. Is there a way I can remove sort order from column names while displaye in the chart and the legend entry box.

Help on it is highly appreciated.

Fizza