INSERT: Multiple Subqueris

I have a form with a print button. When pressed it runs of a set of labels between 2 dates. I wish to keep a log of the print jobs that are done. Storing the date and time that the print was done, who did it and (The bit I can't figure) the date range of the print job.

I am trying to make an INSERT statement with 2 queries. 1 for the oldest date of the print and one with the most recent date.


INSERT INTO PrintHistory (RangeStart, RangeEnd)
VALUES (
(SELECT TOP 1 [Bookings].DateEntered
FROM [Bookings]
WHERE [Bookings].ConfirmationSent Is Null
ORDER BY [Bookings].DateEntered),

(SELECT TOP 1 [Bookings].DateEntered
FROM [Bookings]
WHERE [Bookings].ConfirmationSent Is Null
ORDER BY [Bookings].DateEntered DESC)
);


The above doesent work and gives 'Reserved Error (-3025)'

Am I barking up the wrong tree with this or have I just made a small error?