Can we get this behavior for text object?

example:

many games use this type of automatic typing style of text display and so far I saw only one sample that was too complicated to understand how it was made.

It would be neat to have a behavior or the action that could activate for the text to display like in the exsample

I may be missing something but isn't this just a basic typewriter effect, similar to THIS example?

cool thanks! That method makes things much more simple, just too bad the typewrite effect isnt added to the text object and ust be added in that funny left and len code