Vertical Scroll Handler Extension Not Working

I was making an app in which i wanted to add some scroll effects for that i am using vertical scroll handler extension by Collin Tree but the extension do not seem to work.

Here are my components:-

Here are my blocks:-

I had added notifier show alert notice to get scrollY because i want to test that if it show the notifier but it is not showing anything.

Any help will be appreciated,

I am really sorry, coz i had made my screen to scrollable and that is why it was not showing the vertical scroll :sweat_smile: