I would like to add a field to the Person table that should display a credit card number with all but the final four characters masked. IE: xxxx-xxxx-xxxx-1234

I have a security profile that has read/write access to the pers_creditcardnumber field but all other users should only see the masked value.

The "StroedProc" entry type looked promising until I looked in the online help and System Administrator Guide and the only thing I could find was "Initiates a stored procedure" with no mention of what parameters the proc should get, or how a vaule is returned from the proc.

Can anyone help?