Attachment #147813
Open the form and have a look to both listboxes - one offers NULL, the other not. application/vnd.oasis.opendocument.database 2018-12-25 11:08:34 UTC 11.62 KB no flags Details

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Attachment #147814
Screenshot of both listboxes (without and with NULL for input) image/png 2018-12-25 11:09:50 UTC 4.43 KB no flags Details