Hi Lucianc, and thanks for your help. I really need to apologize becouse my bad manners, but I really want to solve this situation. I don´t know if your answer will work, as I said, I´m not a Report person, but I really appreciate that you try to help me. At the other hand, we are in Venezuela, excuse my poor english. The Reports people tell me that they are using Jasper Server, not just Jasper Report. It means in my words that they don´t embed the report in the application, it is in the report server, and they refers to it in a URL. I supposed this parameter you said before, Content-Disposition Response can be modified in a XML or a kind of parameter file. Again sorry for my behaviour... Jesus