Ng-Click not functioning rom Ionic Modal

Guys i’m quite new on AngularJS and Ionic. Here’s the problem, I have this text size controller which is going to function on click. When i use the controller on the page, it worked like a charm. But when I try to use it from a modal it doesn’t show a thing.

Here’s the full code :

Sorry for the long post, I really need help to understand this.