Try creating a field within a field ...

1. Insert a Date field. The field codes will look like this { DATE  \@ "MMM d, yyyy"  \* MERGEFORMAT }
2. Edit the field to show just the year: { DATE  \@ "yyyy"}
3. Press Ctrl + F9 to create a new blank field: {  }
4. In the blank field, type = 1 + The result should look like this: { = 1 + }
5. Finally, cut the date field and paste it into the new field just after the plus sign: { = 1 + {DATE \@ "yyyy"} }
6. Toggle the field codes and update the field to see 2024.

If that doesn’t work, you may need to use the Excel As Middleware option.

Good luck! :)