How to append content to a confirmation page

I'm a new user, and am impressed with all the features you've built into this system.

I'm having trouble with one piece of the puzzle:

After form submission, I'd like to present the user with a confirmation page -- and I'm using {all_fields} to show that. I'd also like to add some additional content after that, and that content depends on the values of a couple of the form fields.

I've worked with the gform_confirmation filter, and I find I can modify the $confirmation page (e.g. translate everything to upper case), and I can replace it entirely with other code, but I don't seem to be able to add anything before or after it.

I can rewrite the page from the ground up using individual fields, but that gives up the benefit that {all_fields} has in automatically adjusting as the form changes.

So before I start down that road, I thought I'd check to see if I'm just missing something. As an example,

Example code: http://pastie.org/6483763
The logfile: http://pastie.org/pastes/6483847/text

but the page displayed to the user doesn't show the content before the gforms_confirmation_message div

Asking the question may have helped me figure out an answer. I'll try parsing the $confirmation string and inserting my code inside the gforms_confirmation_message div. But if there's a simpler solution, I'd love to hear it.

All is fine. It's just that I didn't realize how the <div> was going to affect the output until I did the debugging needed to post a question here.

I've ended up with the following solution (for anyone who may find this thread later):

I put a token, e.g., "##MSG1##", on the confirmation page in the form. In the function, I set up the string, e.g. $msg1, that I wanted to appear based on the values in the $lead array, and then used

$newconfirm = str_replace ( '##MSG1##', $msg1, $confirmation );
return ( $newconfirm );

Not hard, just wan't obvious that was one way to accomplish what I wanted.