Combobox data

Hi All, I am new to AS3. I hope tis is the correct forum for this question. I am using a combobox component for my project in AS3. I want a user to select a value from a drop down list. Then, the values the user selected to be loaded into a mysql database when the button has been submitted.

I know how to add items to a combobox and how to query a database in php.
But, I'm unsure how to insert data from a combobox to store in the database?

I am guessing I would need the combobox variable to be assigned to the urlvariable and then to urlrequest's data property?. Can you please take a look at my code below:
Any help would be appreciated.

var phpVars:URLVariables = new URLVariables();


var phpFileRequest:URLRequest = new URLRequest("myPhp.File");

phpFileRequest.method = URLRequestMethod.POST;

phpFileRequest.data = phpVars;


var phpLoader:URLLoader = new URLLoader();

phpLoader.dataFormat = URLLoaderDataFormat.VARIABLES;

phpLoader.addEventListener(Event.COMPLETE, showResult);


phpLoader.load(phpFileRequest);


phpVars.email = email.text;

phpVars.password = password.text;


email.text = "";

password.text = "";


//Check to see if the fields are empty

function showResult(event:Event):void{

status_Txt.text = "" + event.target.data.systemResult;

trace(event.target.data.systemResult);


//Combobox select a value to the database

var persons:Array = new Array();

persons[0] = "Select";

persons[1] = "Male";

persons[2] = "Female";


persons.dataProvider = new DataProvider(persons);

combo_box.addEventListener(Event.CHANGE, dataHandler);


function dataHandler(event:Event):void{

trace(event.target.value);