Java API for working with Pivot Tables...?

Hi,
I want to create/modify an existing pivot table in an excel sheet. Is there any open source available to work on pivot tables.
I have seen few articles mentioning that POI supports updation of data, though the apache site says that it does not support working with pivot tables. I am able to copy an existing excel template with pivot table to a new excel using poi but am stuck with updating....
Thanx,
Praveen.

Hi,
The JExcelAPI does not support working with pivot tables... I am still in search of an open source to work with pivot tables....
btw, we are able to update an existing pivot table using apache poi. But we need to change the data range of the pivot table during run time... Am stuck with this... Has anyone come across any open source to work with pivots???
Regards...

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