How do i save the fact that a button has been clicked.

So im creating a game in which I collect objects that represent money.After I die in the game i get into the Shop Class in which i can buy different items depending on the money i have. So lets say that after dying i have enough money to get item1 and item2. So i Click on button1 (representing item1) andbutton2 (representing item2) (when clicked their alpha gets to 0.5) and start the game again.Ok so now i have 1 life more and i get more money.But suddenly out of nowhere i feel something strange deep in me, something that i have never felt before -> HUNGER,

I shut down the PC and run as fast as possible to the nearest shop.

//lets say item1 is : +1life and item2 is : get more money from objects

After I had satisfied my primal needs I feel the strong urge to play that awesome game of mine again. But when i start the game I start to see some strange things: It seems that I havent got one life moreand neither do i get more money and just to be sure that Im not hallucinating (or that i didnt rememer the lifes i had last time) I die on purpose so the Shop menu shows. So now what I see is making me sad -> button1 and button2 are active and have an alpha of 1( and that means that the game thinks that they were never bought/clicked, that i have never played this game before in my life) So i go crazy (cause all that play before was for nothing and i have to start all over again).

After i calm down, I decide to change my life. 1st BIG change is adding some code into the game. To be more specific: a method that will save the items that i bougth, so when i close the game and start again the things i see will bring joy to my life - >: I still have the items that i bougth last time.

So long story short:

how do i make that when i click a button (it changes its alpha to 0.5)and close the FLA , whenever i open the same FLA, the button that i clicked before will be shown as clicked now(it alpha will be 0.5)

I know it has to be with sharedObject and yet i dont know how
currently i have this:

                        private var savedData:SharedObject = SharedObject.getLocal("sharedStorage12");
                    private var buttonInfoArr:Array = [];
                    private var numberOfSavedObjects:int = 0;
                    private var brokenBtnArray:Array = [];
                    public function Main()
                    {
                               for (var i:int = 0; i < 4; i++)
                              {
                                        var myImage_mc:MovieClip = new MovieClip();
                                        myImage_mc.graphics.beginFill( 0xFFFFFF * Math.random() );
                                        myImage_mc.graphics.drawRect(0,0,100,100);
                                        myImage_mc.graphics.endFill();
                                        myImage_mc.x = 50 + i * (myImage_mc.width + 10);
                                        myImage_mc.y = 100;
                                        myImage_mc.name = "myImage_mc" + i;
                                        this.addChild(myImage_mc);
                                        myImage_mc.mouseEnabled = true;
                                        myImage_mc.buttonMode = true;
                                        myImage_mc.addEventListener(MouseEvent.CLICK, onClick);
                              }
                    }
                    private function onClick(ev:MouseEvent):void
                    {
                              var thisButton:MovieClip = ev.currentTarget as MovieClip;
                              trace(thisButton.name);
                              thisButton.alpha = 0.5;
                              thisButton.buttonMode = false;
                              thisButton.removeEventListener(MouseEvent.CLICK, onClick);
                              buttonInfoArr.push( thisButton.name );
                              savedData.data.myArray = buttonInfoArr;
                    }

How do i use that savedData or how would you do it?

PS: can it be done without Dictionary class, cause i still havent grasp my mind over it.