Hi Hendri, Thank you! The code work perfectly! But, I see that it change only one slide (next slide). Not change globally. Soon, I need to decide if I use \pdifsetup before each slide or change all \onslide* to \begin{slide}...\end{slide}. I'm very glad to you! Have a nice day. -- Marcelo Luiz de Laia São Paulo State University (http://www.unesp.br/eng/) School of Agricultural and Veterinary Sciences Department of Technology Via de Acesso Prof. Paulo Donato Castellane s/n 14884-900 Jaboticabal - SP - Brazil Phone: +55-016-3209-2675