I have watched rfay's screencast on creating a donation form with custom line items. I have actually created it on the current version of our site. It works wonderfully, however, in the new version of the site the form is a lot more advanced. Because of this I created a custom module to build the form (you can see it here: http://dev.feedingmatters.org/donate)
My question: is it possible to get this custom form's "donation" field to play nice with the rule I've already set up from the screen cast?