Hi Sergey

Thanks for your help

Yes, I'm sure it isn´t datetime.
I'll try to change the connection string as you suggest.

The change to the connection string didn't work, unfortunatelly

The message I get:

OLE IDispatch exception code 0 from General operational error: No data was provided for column 'dddtel2' on table 'agenda', and this column cannot contain NULL values...

The datatype of the field dddtel2 is char and it is empty.