Having an issue adding buttons in phaser

[phaseme]

Hey everyone,

I want to add different buttons with 2 different clickevents. If I add one button it works, if I add another one it doesn't.

The Images and sounds are in my Preloader file
 and i tested them, so they work and aren't the problem.

Any Solutions?

Thank you!

 Game.Level0_5 = function(){};

 var frido;
 var back;

  Game.Level0_5.prototype = {

    create:function(game){
        
		
		back = this.add.sprite(game.world.centerX, game.world.centerY, 'hauptkirche');
		
		back.scale.setTo(1.335,1);

    back.anchor.setTo(0.75, 0.5);
		
	
	
	frido = this.add.sprite(game.world.centerX, game.world.centerY, 'frido2');
		
		frido.scale.setTo(0.5,0.5);

    frido.anchor.setTo(2.0, 0.67);
	 
	 this.createButton(game, "      Das ist die Hauptkirche.\n \n  Die Hauptkirche wurde 1085 erbaut.\n  Bis zur Reformation war sie katholisch \n und wurde danach \n im Jahr 1560 evangelisch. \n Im Dreißigjährigen Krieg (1618-1648) \n wurde die Kirche zerstört \n und musste neu gebaut werden. \n \n Frage: \n Wann wurde die Hauptkirche zerstört? ", 
	 game.world.centerX +266, game.world.centerY + 155, 268, 900.0,);
	
	var button = game.add.button(
                        game.world.centerX+265,
                        game.world.centerY+45,
                        'aki',
                        function() {
						this.game.sound.play('correctanswer');
						this.state.start('Level1');
						},
                        this,
                        0,
                        1,
                        2,
                        3);
                    button.anchor.x = .5;
                    button.anchor.y = .5;
                    button.input.useHandCursor = true;
		
	},
	var btn = game.add.button(
                        game.world.centerX+200,
                        game.world.centerY+60,
                        'bki',
                        function() {
						this.game.sound.play('correctanswer');
						this.state.start('Level1');
						},
                        this,
                        0,
                        1,
                        2,
                        3);
                    btn.anchor.x = .5;
                    btn.anchor.y = .5;
                    btn.input.useHandCursor = true;
		
	},

	update: function(){
	
	
},


 createButton:function(game, string, x, y, w, h, callback) {

    var button1 = game.add.button(x, y, 'button1', callback, this, 2, 1, 0);

    button1.anchor.setTo(0.5, 0.6);

    button1.width = w;
    button1.height = h;
	
    var txt = game.add.text(button1.x, button1.y, string, 
    { 
        font: 'bold 14px palatino linotype', fill: '#0000000', align:'center', wordWrap: true, wordWrapWidth: 600
    });

    txt.anchor.setTo(0.5, 1.5);
  }

 

  

 
  };