>Hola Carlos,
>
>If you want to grant 10 licenses, create a table with 10 records. Whenever a user logs in, he grabs the first available record and locks it.
>
>When 10 records are locked, no more users can grab a license and the program bounces them.
>
>If any workstation crashes, its locked record is released.
>
>This is the simplest way I've seen for implementing what you need, but I'm sure that someone can poke holes at it and/or come up with something more interesting.
>
>alex

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But what if the user add records to the table?