1120: Access of undefined property

Hi, I need a solution for my script for school assignment.

This is my codes:

stop();

var kanan:Boolean = false;

var kiri:Boolean = false;

var jumlah:int = 0;

var n=0;

var t=3;

kalah.visible = false;

mulai.addEventListener(MouseEvent.CLICK, mulaimain);

function mulaimain(event:MouseEvent):void

{

kalah.visible = false;

mulai.visible = false;

home.visible = false;

n=0; score.text=String(n);

t=3; lives.text=String(t);

stage.addEventListener (KeyboardEvent.KEY_DOWN, tekantombol);

stage.addEventListener (KeyboardEvent.KEY_UP, lepastombol);

cacto.addEventListener(Event.ENTER_FRAME,jalan);

taco.addEventListener(Event.ENTER_FRAME,jatuh);

heart.addEventListener(Event.ENTER_FRAME,jatuhhati);

function tekantombol (event:KeyboardEvent):void

{

  switch (event.keyCode)

  {

  case Keyboard.RIGHT :{kanan = true;break;}

  case Keyboard.LEFT :{kiri = true;break;}

  }

}

function lepastombol (event:KeyboardEvent):void

{

  cacto.gotoAndPlay(1);

  switch (event.keyCode)

  {

  case Keyboard.RIGHT :{kanan = false; jumlah=0;break;}

  case Keyboard.LEFT :{kiri = false; jumlah=0;break;}

  }

}

function jalan (event:Event) :void

{

  cacto.x+=jumlah;

  if (kanan){cacto.gotoAndStop(3); jumlah=11;}

  if (kiri){cacto.gotoAndStop(2); jumlah=-11;}

  if (cacto.x>=997){cacto.x=-10;}

  if (cacto.x<=-37){cacto.x=977;}

}

function jatuh(event:Event):void

{

  taco.y+=7;

  if(taco.y>=390)

  {

  t=t-1;lives.text=String(t);

  taco.y=-2;

  taco.x=Math.floor(Math.random()*800);

  }

  if(taco.hitTestObject(cacto))

  {

  n=n+1;score.text=String(n);

  taco.y=-2;

  taco.x=Math.floor(Math.random()*800);

  }

  if(t==0)

  {

  cacto.removeEventListener (Event.ENTER_FRAME,jalan);

  taco.removeEventListener (Event.ENTER_FRAME,jatuh);

  kalah.visible = true;

  mulai.visible = true;

  }

function jatuhhati(event:Event):void

{

  heart.y+=12;

  if(heart.y>=390)

  {

  heart.y=-30;

  heart.x=Math.floor(Math.random()*800);

  }

  if(heart.hitTestObject(cacto))

  {

  t=t+1;lives.text=String(t);

  heart.y=-30;

  heart.x=Math.floor(Math.random()*800);

  }

  }

}

}

and this Output:

ReferenceError: Error #1065: Variable TCMText is not defined.

Can somebody help me?