ActionScript 2.0 :: Create A Scroll Area Text?

I am trying, this time, to create a scroll area text. Where after pressing a button, a text will be added to the textarea below the previous text. Although, dont know why, its not working.

i am using this code to add the text to the textarea and then trying to scroll down and add more text bellow the previous one. where m_text is the name of my text area.

I have also attached the file.

Code:

on(release)
{
m_text.scroll = m_text.scroll +1;
m_text.text ="hello ";
}