Pivot Bar Chart - adding errors?

[Roge]

Hi,
Using Excel 2002 SP3 to make Charts with pivot tables: it works fine to
display data, but I can not manage to get error bars in the plot,

or to put it differently: I make a pivot table bar chart and using another
column in the data-row, I would like to add this to the pivot table bars as
an indication of the error on these bars.

It would be valuable if you would have idea's or suggestions,

Thanks in advance,

Roge