How to tween alpha of dinamic drawn lines

programming flash
1

I´m using the code bellow to draw a line:


createEmptyMovieClip("line",1);


line.lineStyle(2,0xFFFFFF,100);
line.moveTo(0,0);
line.lineTo(100,100);

My question is: How can I make the line to tween, from alpha 0 to 100 using AS2? I Tried TweenMax on “line” movieclip but it does not work.

Any help will be great! Thanks!