That soluction is a problems, it show window maximixed first, the second call is not, and so on.
Better try putting this code on "Init Event" of The "Data Enviroment" in your report:
IF WEXIST('Report Designer')
zoom window 'Report Designer' MAX
ENDIF
>Andy
>
>Try this
>
>REPORT FORM yourreport preview
>KEYBOARD '{CTRL+F10}'
>
>
Dominican Republic, a Paradise in America