Form variable help

I’m using Flash MX to build a form, and I am having trouble getting variable values to trace.
I have a combobox that sets an ‘order quantity’ and three input fields that display data on the page (fields for a business card, formatted in the proper ont).
First, how can I get the value from the combobox? I have given the box the Instance name “qty_cb”.
Second, I am using input text fields to collect data, and dynamic text fields to display the data live on the screen. In the case of the email input field, I named the instance ‘enteremail’ and assigned it the variable name 'email. I also have a dynamic text field called ‘emaildisplay’ that I’ve assigned the variable name ‘email’ and that displays what gets typed into the ‘enteremail’ field.
I need to pass these variables and some other hidden values through to another page. I’ve developed this, and it sets up the name/value pairs I need, but only the hidden variables are defined.
on (release) {
cardform = new LoadVars();
cardform.userid =“XXXXXX”;
cardform.product = “Business Cards”;
cardform.price = “.55”;
cardform.qty = qty_cb.getValue();
cardform.email = “”;
trace(cardform.qty);
strURL = “http://ww11.aitsafe.com/cf/add.cfm?userid=” + cardform.userid + “&price=” + cardform.price + “&product=” + cardform.product + “,” + cardform.yourname + cardform.yourphone + cardform.youremail + “&qty=” + cardform.qty;
getURL(strURL, “_self”);
}

Here’s the file in action: http://www.prswebdev.com/bcards.php