I presume you mean a column chart (vertical bars). Copy the data, select the
chart, use Edit menu Paste Special to add the data as a new series. This
adds the series as another bar on the stack. Select the new series, go to
Chart menu Chart Type, and choose a line type. Format to suit.

- Jon
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Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
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"TomB" wrote in message
...
I want to add a line on top of a stacked bar chart. Is there a straight
forward way to do this?