Hi,
I cannot simulate this issue in any way so I cannot help easilly.
Please try to open my DBDemo application and try to do the same action in form TrDBGrid_DBActions.
It works as expected in my case. Do you have this issue.
If not then there is probably some issue in the INI file whoch contains some previous fields. Try to delete INI files and run again. It should help.
Regards
Tomas