How do make my textbox scroll system for long text better ?

Thanks to Maverick1912, I managed to set up a scrolling textbox to display longtext. It has the following features :

- touch top and bottom half of the box to scroll text down/up, scroll speed accelerates when user touches text box further from text box middle

- a test to stop scroll down when space is added to of text

I'm now trying to stop scroll up when bottom of text is reached

If this type of text box scroll system is good for my needs, I think the best achievement would be to recreate swipe scroll with inertia.

Anybody has an idea on how to do this ?

Here is the capx file :

dropbox.com/s/qdmpi2edonqc36d/ScrollText.c3p