How can I send a variable on flash animation to Storyline ?

I put the script on flash 

import flash.external.ExternalInterface;

_button.addEventListener(MouseEvent.CLICK, buttonClickHandler);

function buttonClickHandler(event:MouseEvent):void{
//grab the current value from Storyline and increase it by one
var valueIn:int=ExternalInterface.call('GetPlayer().GetVar','goNextSlide');
valueIn++;
//send a new value to Storyline
ExternalInterface.call('GetPlayer().SetVar','goNextSlide',valueIn);
}

Hi Sunny,

Your code looks fine only and just make sure you are using a server to test the build.

Flash action script wont communicate with storyline if you test the build through a local machine,

https://www.apachefriends.org/download.html

Hi Sinchu,

It works perfectly. 

Thanks a lot! I appreciate your help :)