No, the pattern you're using has invalid regular expression - '{4)'

lcExpression ="(\b[0-9]{3}-[0-9]{4}\b)"

>When I run your code, I get an error - unknown com status. Do you think my pc has vbscript disabled?
>
>

>LPARAMETERS tcnarr
>* ssn pattern
>lcExpression ="(\b[0-9]{3}-[0-9]{4)\b)"
>loRegExp = CreateObject("VBScript.RegExp")
>loRegExp.IgnoreCase = .T.
>loRegExp.Pattern = LCexpression
>RETURN loRegExp.Test(tcnarr)
>