I've imported some values attached to x y coordinates and am trying to display them as charts. All has gone well apart from the values displayed on the charts won't appear in the legend. I've exported the x y feature class I created into a new shapefile but no luck.
This may not be the only way, but when dealing with attributes and legends (or text boxes) we always export the values to a Excel file, then make the text box look as you want (also remove the grid lines in excel) then you can copy and paste the excel file into a graphic editing program (photoshop, illustrator, even mspaint if thats all you have) and create a graphic at the required dpi. Then insert the graphic into your map.
This is assuming you want a graphic with a white background, you can always change colors a bit in the graphic program. Then throw a nice neatline around the item and set your gaps to 0. Like i said there are probably better ways but this how we do it.