Screens and elements not disabling or enabling

This is a small project I quickly threw together to test out transitioning from one state to another because I’ve been having an issue with menu transitions in one of my other projects. It uses code from the Keepy Up tutorial for transitioning from one state to another, and code from another tutorial explaining how to make buttons. The odd thing is, the start button does not disable, and the reset button does not enable. This is similar to what my other project is doing, where the start button simply does not disable.

Tried capitalizing enabled to see if that would affect the buttons. Makes the first one disappear, but doesn’t work for the other two.

Turns out I had to capitalize the listener for enable and disable.

this.on('Enable', this.onEnable, this);
this.on('Disable', this.onDisable, this);