XipsAhoy

I am trying to make a game so I tried to load a tileset, to help me make the game, but when I try to play my game, this shows on the console- ```Cannot read property 'addTilesetImage' of undefined``` This is my code: ``` Ball.Level1 = function (game) {}; Ball.Level1.prototype = { create: function () { var map; var layer; this.map.addTilesetImage('element-h'); this.map.addTilesetImage('element-w'); this.map = this.game.add.tilemap('map', 32, 32); this.layer = this.map.createLayer(0); this.layer.resizeWorld(); } }; ``` this is what I pre-load! ``` this.load.image('element-w', 'img/element-w.png'); this.load.image('element-h', 'img/element-h.png'); this.load.tilemap('map', 'img/Teste.csv'); ``` Thank for your help!