Selecting Data And Incrementing Using DMax

Jun 27, 2007

I have data in a table
I am extracting using an append Query, I wish to assign a number from the original table +1 to the records pulled by the append query.
I am very new to this and have the expression below, however the result is #error in created field CertifNumber
The data I am looking for is in table Sample Details and the Field is CertNo

CertifNumber: DMax([Sample Details]![CertNo],"Sample Details","[Sample Details]![CertNo]+1")

If somebody could help me with this expression I would be very grateful.

Thanks

Richard

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