E-Commerce Configuration Guide : Site Configuration Settings : Membership Settings : MemberVerifyRegEx
 
MemberVerifyRegEx
Key value:
A valid regular expression
Description:
Used for verification of the guest for memberships. Used to provide the regular expression used to validate the input into the field used for verification. If the value for the MemberVerifyField key is blank, this key is ignored.
Example:
MemberVerifyRegEx = ^.{2,20}$
(written for use with the last_name field – verifies that the text entered is at least two but no more than twenty characters in length)
MemberVerifyRegEx = ^.{6,12}$
See also:
MemberVerifyPrompt
RenewVerifyRegEx
MemberVerifyAll
MemberVerifyField
MemberVerifyRegExMessage