Regular Expression Match for Google Analytics Goal Tracking

I have a coupon request form on every page on my website, when the coupon form is submitted you are taken to the same page you are on with an additional "?coupon=sent" paramet开发者_如何学Cer added to the query string. I would like to be able to track any page url wiht ?coupon=sent on the end as a goal. Currently, I have this:

/[^.][.php][\?coupon\=sent]+

which does not seem to be doing the trick. Any ideas?

Use this one:

/\?coupon=sent/