Hi Marco,

There is no additional code anymore in the BeforePost event. I
use the OnValidateField event, because it notifies the user immediatly
of a wrong value. In the BeforePost event, it only notifies you when
it's posting the record. It's strange to me that it got fired twice.
I will try to check if the field is assigned. I will let you know.

Thanks a lot for you help,
Best regards,

Nico