# Getting error when click

**URL:** <https://forum.kirupa.com/t/getting-error-when-click/319451>\
**Category:** flash\
**Created:** [February 21, 2011, 11:42am UTC](https://forum.kirupa.com/t/getting-error-when-click/319451 "2011-02-21T11:42:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pravingate07](https://avatars.discourse-cdn.com/v4/letter/p/4491bb/32.png) [@pravingate07](https://forum.kirupa.com/u/pravingate07)\
**Post date:** [February 21, 2011, 11:42am UTC](https://forum.kirupa.com/t/getting-error-when-click/319451/1 "2011-02-21T11:42:46Z")

</div>

hii, i’m developing one small interactive game and i’m getting this error, when i’m trying to click on button.  
error #1009: Cannot access a property or method of a null object reference.  
at Geese\_And\_Tortoise\_PG01\_Animation\_V02\_fla::Geese01 \_Null\_Animation\_5/onMouseClick()

my action code for that is:

import flash.events.MouseEvent;

act\_btn.addEventListener(MouseEvent.CLICK,onMouseC lick);  
act\_btn.addEventListener(MouseEvent.CLICK,onOut);

function onMouseClick(event:MouseEvent):void  
{

```
 quick01.visible=false; (quick01 is movieclip1 instance name)
 quack01.visible=true;(quack01 is moviclip2 instance name)
 quack01.play();
 }
 
 function onOut(event:MouseEvent):void 
 { 

   
   quack01.visible=false;
   quick01.visible=true;
   

 }	

```

why i’m getting this error, can anybody plz tel me