Have you tried using the Adjust Window command in the opening script??
What do you mean by "full screen"?
"Kiosk" mode -- where the menu bar and other features are hidden?
or Just make the filemaker window as large as possible?
Thanks to all, I mean when start application the windows is maximized, with all menu.
Now I am using a startup script and I set the windows dimension to my screen value (i.e. 1440x900) , but I would that value should be dinamic relating the different screen.
Move/Resize Window [Current Window; Height: Get ( ScreenHeight ); Width: Get ( ScreenWidth ); Top: 0; Left: 0]
Adjust Window [Maximize]