excel 2007

I am return data using microsoft query and am graphing this data.

As the ranges change I want to be able to set a vertical range for the chart
using the min and max values in the data returned. I have calculated the min
and max into 2 cells.

I can do this manully using the chart tool 'vertical (value) axis screen but
it only takes fixed values not a cell reference.

Can this be done?

Thanks for any help