Create a PRG file that will call your login form and set up the app if the login is OK.

Main.PRG:

DO FORM Login TO llLog
IF llLog
   DO Menu.MPR
   READ EVENTS
ENDIF

HTH

>I have a login form to valid the user enter. So, when it have made the validation this form should be liberated with a release and then execute a form called menu_principal.
>This doesn't happen exactly so, since menu_principal is executed but the form login is not liberated.
>If I execute the release without invoking the menu_principal if the form is liberated, but if I later invoking the menu_principal the form login continue active.
>What could I do?