ok, I close this topic, my error was the importance to use the same parameter name Contact in the render method.
void render(SafeHtmlBuilder sb, Contact *contact*); <ui:with field='*contact*' type='com.MS.client.core.MODEL.admin.Contact_database.Contact' /> -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/73VBufqjBKIJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
