automatically print pdf report, save it as attachment

Hi,
I am not sure if this a Aeroo specific topic ?! What am trying to achieve is, that after a purchase order has been confirmed, a pdf file, using an aeroo report should be generated automatically and saved as an attachment to the purchase order. How can this be done in OpenERP Version 7 ?
Thanks
Thomas
I am not sure if this a Aeroo specific topic ?! What am trying to achieve is, that after a purchase order has been confirmed, a pdf file, using an aeroo report should be generated automatically and saved as an attachment to the purchase order. How can this be done in OpenERP Version 7 ?
Thanks
Thomas