Rotate chart series label

Hi,

I'm having trouble with a bar chart in Keynote 09. I'm trying to rotate the series text because the series labels are a little too long and would like to rotate them so they'll fit. I've spent a good hour trying to do this, and I'm stumped. Any ideas?

Here's what I'm facing: h http://imgur.com/cdTXF.png

Thanks!

Message was edited by: WilliamW