Why I need to click it twice show buttons?

Question

Hi,
First I don't see any buttons (Buttons -This is a movie clip) on Stage. When I click on Show button using the following code, I can see my Buttons. But first I need to click twice to see the Buttons. While second time there is no problem. How to solve the problem?
this.Buttons.visible = false;
import fl.controls.Button;
var myButton:Button = new Button();
myButton.label = "Show Menu";
myButton.name = "btn1";
myButton.toggle = true;
myButton.move(55, 95);
addChild(myButton);
myButton.addEventListener(Event.CHANGE, changeHandler);
function changeHandler (event:Event):void {
    if (event.currentTarget.selected == false) {
        Buttons.visible = true;
        myButton.label = "Hide Menu";
    } else {
        Buttons.visible = false;
        myButton.label = "Show Menu";       
Thanks and regards,

Answer 1

use:
function changeHandler (event:Event):void {
    if (event.currentTarget.selected) {
        Buttons.visible = true;
        myButton.label = "Hide Menu";
    } else {
        Buttons.visible = false;
        myButton.label = "Show Menu";