Fieldforwarder PHP Script Doesn't Forward Fields The Second Timearound

I'm new to this newsgroup and have tried to search through the archives
first, before posting this question. I don't think it has been addressed
before. Also, this question is about a script I found on zend.com, and I
have also emailed the author of the script, unfortunately without any
replies sofar.

Here goes:

I am working on a website for pizza delivery. Through this website people
need to be able to order a pizza or pasta online.

The ordering proces will be a form with multiple pages. The visitor will be
guided through the menu in 5 steps. Step 1 being the pizzas, step 2 the
pastas, and so on.
On each page there is always the possibility to add an "side-order" to their
order. So, on the right is always the same list of side-orders.

I am using a script called fieldforwarder.php (see this page for the script:
http://www.zend.com/zend/spotlight/...e7.php#Heading9)

It works perfectly, however one challenge still remains and it has to do
with the side-order. I think it has something to do with the
fieldforwarder.php file.

The side-orders can be choosen during any step. So, if one chooses a side
order in step 1, it needs to remain chosen in the following steps. I have
this working, by using if statements. One pulldown menu in the side-order
menu looks like this:

<select name="italianchefsalad_junior" class="orderpulldown"
id="italianchefsalad_junior">
<option value="0"<?php if ($italianchefsalad_junior==0) echo "selected";
?>>0</option>
<option value="1"<?php if ($italianchefsalad_junior==1) echo "selected";
?>>1</option>
<option value="2"<?php if ($italianchefsalad_junior==2) echo "selected";
?>>2</option>
</select>

Although starting from step 2 the code looks this actually.
Well, it does work in a way that it shows me when i clicked something in the
side orders on the first page. However, when i try to choose something in
step 2 (or 3 or 4 or 5) it won't "remember" it.
I guess that the fieldforwarder.php file doesn't check for changes in
fields, it already has indexed? I'm not quite sure, because the code of the
file is a little bit too advanced for me.

Hopefully someone on here can help me out. I really hope so.