>thanks All , I still got one problem
>I got two applications in the server,
>UserA can login both applications in his PC by using his loginid .
>However, my license count for the PC login, but not user.
>How can I do that ??

You can have both applications use the same table and just count the users, not user/app pairs. So if user runs the second app, it doesn't increase the login count. You still have to keep separate records for each user/app pair, but when counting to 5, count distinct users.