I wish to create a 'search form' where I can pass the selected values from drop-down and multiple choice fields to variables which I can then output like custom post fields. The purpose for this is to build a string which I can then pass to an embedded iframe URL.
I have created a non-gravity form version of this search form here: http://www.astronautdesigns.com/demo/gravity/form.php
Essentially I need to have variables such as $agentid, $proptype, etc that I can echo into the template page containing the iframe, so the URL inside the iframe is dynamically updated by the search form.
I have tried using the custom fields option in the form builder, but I can't get it to update the values of the custom fields on the page to which the form redirects. It is quite likely that I don't know what I'm doing here and also possible that this is not the best approach to this problem.
I have also read a number of support topics that cover 'pre-populating', but I seem to need to the opposite; populating some variables after the form submission.
Another thing to note is that unlike data capturing forms, I don't need to store the form entries. It doesn't really bother me if this cannot be disabled.
I could just implement my demo and that would be OK, but if I can set this up with Gravity then it will be easy for the client to make changes to the search parameters.
Thanks in advance,
Tim.