>>This is incorrect - the Canadian Postal code is always a sequence of 6 character, alternating between an uppercase alpha and a numeral. You'd be much closer with:
>>
>>"!9!9!9"
>>
>>and then in validation ensure that positions 1, 3 and 5 have values between "A" and "Z", and positions 2, 4 and 6 are valid digits.
>
>Technically, doesn't the Canadian code always use a space at char #4, and is 7 chars long? That's the way I always have it, and I deal with a lot of Canadians.

I looked in the DMM - it shows the use of the space as optional in the printed address, and it must be omitted in the PostCode barcode. The space in the middle is primarily an aid for postal employees doing manual sortations.