Only one user at the time in a paticular form (Access-2000)

[Sogge]

Hi,

I'm working on a database that's on a citrix-server network, with
multiple users. For one particular form, I would like to allow only
one user to open it at a time.

I know of the idea of creating a lock-table and write username and
formname in there, and check if the form is already open by someone
else, but this does'nt work if the citrix crashes, - then the form
will be locked for everyone.

Does anyone know how to do this?

Thanks in advance.
Sogge