Papa -

Use one of these techniques to add a line to the chart:

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

Since this line is a series linked to worksheet cells, when the values in the cells
change, the line moves. All you need to do is put a formula into the cells that make
the line move appropriately.

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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Papa Jonah wrote:

I have a chart that has data added every month.
I would like a vertical line at May 04. However, everymonth the data shifts
as I only plot the last 2 years of data. Is there a way to use code or a
hidden data line or something to add that line?

Thanks,