/**** 
* Classes
****/ 
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Bubble class to represent each bubble in the game
var Bubble = Container.expand(function () {
	var self = Container.call(this);
	var bubbleGraphics = self.attachAsset('bubble', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Randomize bubble position and speed
	self.x = Math.random() * 2048;
	self.y = 2732 + Math.random() * 500; // Start off-screen
	self.speed = 2 + Math.random() * 3; // Random speed
	// Update function to move the bubble upwards
	self.update = function () {
		self.y -= self.speed;
		if (self.y < -100) {
			self.resetPosition();
		}
	};
	// Reset bubble position to the bottom of the screen
	self.resetPosition = function () {
		self.x = Math.random() * 2048;
		self.y = 2732 + Math.random() * 500;
	};
	// Event handler for popping the bubble
	self.down = function (x, y, obj) {
		self.resetPosition();
		LK.setScore(LK.getScore() + 1);
		scoreTxt.setText(LK.getScore());
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Light blue background
});

/**** 
* Game Code
****/ 
// Initialize score display
var scoreTxt = new Text2('0', {
	size: 150,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Array to hold all bubbles
var bubbles = [];
// Create initial bubbles
for (var i = 0; i < 20; i++) {
	var bubble = new Bubble();
	bubbles.push(bubble);
	game.addChild(bubble);
}
// Update function for the game
game.update = function () {
	for (var i = 0; i < bubbles.length; i++) {
		bubbles[i].update();
	}
};
// Handle touch/mouse down events on the game
game.down = function (x, y, obj) {
	for (var i = 0; i < bubbles.length; i++) {
		if (bubbles[i].intersects(obj)) {
			bubbles[i].down(x, y, obj);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -5,9 +5,9 @@
 //<Write imports for supported plugins here>
 // Bubble class to represent each bubble in the game
 var Bubble = Container.expand(function () {
 	var self = Container.call(this);
-	var bubbleGraphics = attachAsset('bubble', {
+	var bubbleGraphics = self.attachAsset('bubble', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	// Randomize bubble position and speed