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I'm trying to duplicate an existing form and have some questions.

a) It looks like you can populate a dropdown from a REST API json array.  Is there anyway to include a parameter in the restful api, like the screenname of the person?  for instance, I want to pass something like myserver.com/rest/somefucntion?id=SCREEN_NAME

Is that possible?

Also, is it possible to re-populate text fields using REST?

b) Is it possible to send a copy of the form to the submitting user?  Can I (for example) have an email field in the form and send a copy of the form to that email in addition to the normal notifications?

c) If I submit a form with notification setup and it isn't being sent, where should I start troubleshooting?

Thanks!