Populating dynamic text field with form data from previous frame

I've got a dynamic text field (name) and I'd like to populate it with the values from two fields in a form from a previous frame. Does anyone know how to transport user-input values from one frame to another frame?

Here's the code I'm using to capture the user-entered data:

var submitListener:Object = new Object();
submitListener.click = function(evt:Object) {
var result_lv:LoadVars = new LoadVars();
result_lv.onLoad = function(success:Boolean) {
if (success) {
result_ta.text = "Thank you for completing this training module.";
} else {
result_ta.text = "Error connecting to server.";
}
};
var send_lv:LoadVars = new LoadVars();
send_lv.fname = fname.text;
send_lv.lname = lname.text;
send_lv.email = email.text;
send_lv.sendAndLoad(" http://distance.uaf.edu/ferpa/process.php", result_lv, "POST");
gotoAndStop("certificate");
};
submit_button.addEventListener("click", submitListener);

Is there any way to capture the values from the fields 'fname' and 'lname' (which are instance names not variable names)? Note: I had to make them instance names in order for the code to be accessible to LoadVars() and hence to my php processing script.

thanks,
sage