Scroll up / scroll down - switch to next label

I am working on a project with edge animate and i have got off screen pages that animate in to place when i click on a button. (click event - sym.play("to_page2"); )  this works fine, however i also want to scroll up and down and cycle between the "pages". I have recorded the animation and uploaded it to vimeo:

Edge animate project on Vimeo

Currently i am working with labels. Once you click -> go to label. But i want to scroll down and go to the label next in line, and when i scroll up: go to the previous label.

Can somebody help me out here? Other solutions to scroll cycle between these pages are welcome too.

Cheers,

Bas