Beginner's trouble with If-Else

I am just learning AS. I am trying to make a username and password box that will return a welcome message if the two text fields are entered correctly and a “Sorry Charlie” message if they are not.

I am using an If-Else statement. If I have the Else part commented out, I am able to enter text into the two text fields and get a welcome message. With the else statement though, I am not able to finish entering text in the second text field before the “Sorry Charlie” message appears.

Please, how can I make the password text field wait until all the info has been entered and listen for the Enter key?

Thank you!

passwordBx.addEventListener(KeyboardEvent.KEY_DOWN, greeting, false, 0, true);

//var anyName:String; Want to be able to enter any name later

function greeting(evt:KeyboardEvent):void {

if(userNameBx.text = = "Marta"  &&  passwordBx.text  = = "Chicken" && evt.keyCode = = Keyboard.ENTER) {

            evt.keyCode == Keyboard.ENTER

            welcomeBx.text = "Welcome " + userNameBx.text;

            return;

            //}else{

                        //welcomeBx.text = "Sorry Charlie!";

            }

}