You might create a global integer field that counts the opened instances
of the form.
On open, if global_field >= 1, display an error message and close the
window, otherwise increase global_field by 1.
On close, decrease global_field.
I'm not sure if this works, but it might be worth a try.
Regards,
Thilo
Daniele B. from Italy wrote:
Hello Listers,
when a user open the form "A" I need to stop the possibility that the
user could open a second window of the form "A".
Does anyone have any thoughts or suggestions?
Thanks in advance
Best Regards
Daniele
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