I created a custom invoice report in openerp v 7.0 using openoffice.

Here in my report there is a table with two rows and 6 coloums In the first row for displaying the headings like Product,unitprice ,tax, discount etc... In the second row i add the products, unit price tax, discount etc. This works fine. But my problem is the height of the table . Ie when i have only one product in the invoice line the table appears too short in the pdf file .

But my need is to give a fixed height to the second row. Inorder to appear in the pdf report..

How can be give a fixed height.