I'm trying to create a small game (it's more about learning how to than making a compelling game). It can be resumed like this:
User choose a building in a menu and place it on the stage. When clicking on the newly created building, s/he can choose to upgrade it. (For those that play games like Clash of Clans, it's what i'm trying to do). 
I have my menu, and can place buildings without problem, but I can't click on them. 
Here is the beginning of my code: 

```
var build:int=0; //variable that defines which building to place on stage

menuBuilding.house.addEventListener(MouseEvent.CLICK, fnChooseHouse); //when click on House in Building Menu
function fnChooseHouse (e:Event):void{
    build = 1; //building to place is a House.
}

city.addEventListener(MouseEvent.CLICK, mouseClickEvent);

function mouseClickEvent(e: MouseEvent): void {
    if (build == 0) { //if building not chosen, do nothing
        return
    } else if (build == 1) { // if building is a house
        var house1: house = new house();
        addChild(house1); //add instance of the house
        house1.x = stage.mouseX;
        house1.y = stage.mouseY; // place the house where I clicked
        build = 0; //reset the variable.
        house1.mouseChildren=true; //allow instance of house to be clicked.
    }
};

```

My problem is that there is gonna be a lot of houses (and other buildings). I've tried to name them and push them in an array (so I can access them with a for each...in loop), but it doesn't work. 

Someone has an idea? (Btw, I'm still learning AS3 as I go, so I'm not using external .as file yet, still in timeline).
Thanks in advance :)