The goals are checking the associated `ARTrackableManager` number of trackables count. One thing to note is this is just looking for a trackable to be added, it does not check the tracking state of said trackable.
The script [UIManager.cs](https://github.com/Unity-Technologies/arfoundation-demos/blob/master/Assets/UX/Scripts/UIManager.cs) is used to configure the Instructional Goals, secondary instructional goals and holds references to the different trackable managers.
The script [`UIManager.cs`](https://github.com/Unity-Technologies/arfoundation-demos/blob/master/Assets/UX/Scripts/UIManager.cs) is used to configure the Instructional Goals, secondary instructional goals and holds references to the different trackable managers.
The script [ARUXAnimationManager.cs](https://github.com/Unity-Technologies/arfoundation-demos/blob/master/Assets/UX/Scripts/ARUXAnimationManager.cs) holds references to all the videos, controls all the logic for fading the UI in and out, managing the video swapping and swapping the associated text with each video / UI.
The script [`ARUXAnimationManager.cs`](https://github.com/Unity-Technologies/arfoundation-demos/blob/master/Assets/UX/Scripts/ARUXAnimationManager.cs) holds references to all the videos, controls all the logic for fading the UI in and out, managing the video swapping and swapping the associated text with each video / UI.
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