Error 5007: an actionscript file must have...

Question

Hi all, I am new to AS3 and just ran in to this problem.
I am trying to have actionscript 3 and greensocks tweenlite change the alpha properties of another file on roll over.
I can do it using just pure actionscript 3; however when I try to use Tweenlite I run in to this error:
5007: An ActionScript file must have at least one externally visible definition
The code I have used is:
image = mc that has the rollover function added to it;
info = mc that has it's alpha set to 0 and I am trying to get it to tween to 1 in 0.5 seconds.
import com.greensock.*;
import com.greensock.easing.*;
image.addEventListener(MouseEvent.MOUSE_OVER, over);
image.addEventListener(MouseEvent.MOUSE_OUT, out);
function over(event:MouseEvent):void{
TweenLite.to(info, 0.5, {alpha:1});
function out(event:MouseEvent):void{
TweenLite.to(info, 0.5, {alpha:0});
What am I doing wrong?
Thanks in advanced!

Answer 1

Thanks Kglad =)
This advice is true. 
I read about it on another forum but your advice would have helped me too