hello, I'm a beginner in SQL Server 2005, i'm trying to create check constraint, and when i'm trying to create it, an error message was appear.

my steps are:

1) The field is ZIP using nchar(5),

2) in the Expression I type: zip LIKE '[0-9][0-9][0-9][0-9][0-9]'

3) When I click Save button, there was an error message and unable to save the changes

kindly help...