We're looking to do some scripted customer survey calls, and would like to make it easy for our agents by embedding dynamic information within a form. For example, if a script calls for the line, "Hello, <<NAME>>, we're doing a quick survey...", the <<NAME>> could be populated dynamically in a text block based on URL query or POST info.
I believe this is what you are looking for: How to Prefill Your Forms: http://www3.formassembly.com/blog/support-documentation/managing-your-forms/how-to-prefill-your-forms/
If you have specific question, please submit a support request with your form link.