Capture Amount Paid to Return Url

[asgweb]

Using Payments Standard, I need to include the amount that was paid in my return url. I would hope it was just: &Amount=$Amount.

I'm NOT using the hosted buttons. My url looks like:

https://www.paypal.com/cgi-bin/webscr?&business=[business]&no_shipping=2&return=https://fred.com/res.... Phone #s not permitted]05eede791c70f84f70d048f194e84c68bda43b&cmd=_xclick&item_name=Widget 1&amount=219.51

Any help is appreciated.