This web page describes a technique to change series formulas en masse:

http://peltiertech.com/Excel/Charts/ChgSrsFmla.html

It provides a link to a workbook that contains a macro to change these
formulas.

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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"scoons" wrote in message
...
I have a x-y scatter chart with about 40 individual lines originating from
individual spreadsheet tab for each line. I need to clone this chart
multiple times, changing only the column references for the x and y
parameters. To accomplish this I currently go to "chart," "source data"
and
manually change the x and y references for each line. Is there a way to
globally change the cell references for all line on the chart?