Combined line/stacked column chart

[Red]

Hi, I hope someone can help me!

I am creating a chart showing the revenue, profit, and profit margin for
each of our clients.

I would like to have the revenue and profit appearing as stacked columns
(with values on the left hand Y-axis), and the profit margin as a line over
the top of the columns (with values on the right hand Y-axis). The client
names would appear on the X-axis.

I can only get the profit and revenue to appear as two separate columns for
each job, instead of one stacked column.

Any ideas???