This page describes how you can change a series formula:
http://peltiertech.com/Excel/Charts/ChgSrsFmla.html
Keep in mind that the series formula's first argument relates to the
series name, which appears in the legend. If it's entered as text, this
technique (or the associated add-in) will change it directly. If it's a
cell link, use Find-Replace on the worksheet range containing the series
names.
- Jon
-------
Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______