My VisualElement and OnGeometryChange

So I have TokenMenu, which is a VisualElement. It is in my UXML that I am using for the UI for a game I'm making. On TokenMeny(VisualElement) I have defined via UXML that there is a Slider.

So as far as I could decode. The design pattern is to register value changed events on children in the callback of OnGeometryChange. like this:

Code (CSharp):

1.  public TokenMenu()
2.         {
3.             this.RegisterCallback<GeometryChangedEvent>(OnGeometryChange);
4.             this.RegisterCallback<ClickEvent>(OnAttachToPanel);
5.            
6.         }

This worked. Until it did not. Now every time OnGeometryChange comes up, there are not any children.

It might have happened after I upgraded the unity version my project was using. It might be something else.

Regardless I need a better way to have things happen in unity when my user interacts with the UI any help would be appreciated!