Pattern matching error

The following line gets a "badly formed token" error.

else if (matches("[Uu][Ss][Ee][Rr]\([Ss]\): ", textAttr)) {

I know what it's choking on, just don't know how to fix. Any ideas?
Thanks.

tlwtheq - Tue Nov 13 07:46:02 EST 2012

Re: Pattern matching error
tlwtheq - Tue Nov 13 08:01:16 EST 2012

P.S. - want to match text string "User(s):"

Re: Pattern matching error
OurGuest - Tue Nov 13 10:47:22 EST 2012

tlwtheq - Tue Nov 13 08:01:16 EST 2012
P.S. - want to match text string "User(s):"

if (matches("[Uu][Ss][Ee][Rr]\\([Ss]\\): ", "User(s): " )) { ack "true"} //prints true