AS3 Form Inquiry - actionscript-3

Question

I am relatively new to AS3. I am having a few code issues at the moment i am hoping for some advice on this forum.
Basically, i am creating a form for my website. I have one combobox and I want The user enter their email address and password into the fields.
Then click on the submit button to sign in and to validate what they entered is correct. When i run my code in real-time i get an error
1120: Access of undefined property status_Txt. I dont know what status_Txt means.
I copied a large section of this code from a tutorial i read. My code is below: Can someone please tell me how i can resolve this problem.
import flash.net.URLVariables;
import flash.net.URLRequest;
import flash.net.URLLoader;
import flash.events.MouseEvent;
import fl.data.DataProvider;
import flash.events.Event;
//Building the variables
var phpVars:URLVariables = new URLVariables();
//Requesting the php file
var phpFileRequest:URLRequest = new URLRequest("http://www.example.com");
phpFileRequest.method = URLRequestMethod.POST;
phpFileRequest.data = phpVars;
//Building the loader
var phpLoader:URLLoader = new URLLoader();
phpLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
phpLoader.addEventListener(Event.COMPLETE, showResult);
//Variables ready for processing
phpVars.email = txt_input.text;
phpVars.p_swd = pass.text;
phpLoader.load(phpFileRequest);
btn_one.addEventListener(MouseEvent.CLICK, btnHandler);
function btnHandler(event:MouseEvent):void{
trace("Login success");
}
//Validate form fileds
function showResult(event:Event):void{
status_Txt.text = "" + event.target.data.systemResult;
trace(event.target.data.systemResult);
}
var cbox:Array = new Array();
boy[0] = "Male";
girl[1] = "Female";
c_one.dataProvider = new DataProvider(cbox);
c_one.addEventListener(Event.CHANGE, dataHandler);
function dataHandler(e:Event):void{
trace(e.target.value);
}
}

Answer 1

You're attempting to access an object that doesn't exist. status_Txt is being referenced in:
function showResult(event:Event):void{
status_Txt.text = "" + event.target.data.systemResult; //Either remove this or add a textfield to the stage with the instance name status_Txt
trace(event.target.data.systemResult);
}