masking technique for matrix

hye guys..i would like to share with you how to do like matrix muvie by using flash.we are using masking technique..juz follow all d steps..
1st step: create a black bg for this scene..

2nd step: insert new symbol and choose movie clip


3rd step:the create a number 0123456789 and chagne the properties to vertical. and change the color of the numbers to white. you can choose any other font that suitable for this file.

4th step: then, insert a new layer a draw a rectangle same size as the number before


5th step:after draw the rectangel. insert keyframe at any frame u like.i choose insert keyframe at frame 25.make sure at the frame 1 the rectangle is above the text number and at the frame 25 the rectangle is below the text number.

6th step: then, create a motion tween for the rectangle layer.
7th step: right click at the layer number and click mask.make sure the layer number is above the layer rectangel.
8th step: you can go to your scene and drag the movie clip that you have done.you can drag as many as you want.

Below is the example of the interface when you run it.

ok gud luck frens..as long as you follow all d steps you can get same as mine..