I don't see any control on your chart.
Excel 2007 lets you use Forms toolbar buttons in conjunction with a chart. You can embed such a button in a standalone chart sheet, but no longer in an embedded chart. For use with an embedded chart you are encouraged to simply embed the button on the worksheet near or over the chart.
Use a 2D chart instead of a 3D chart. Your chart shows some of the distortion inhereent in 3D charts. All of the values are exactly equal to integers, but the chart makes them look somewhat smaller, and even closer inspection is not really sufficient to convince the user otherwise.
- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______