Display Configuration need an UI to override values.
Now my yml file show this.
display_configuration: widget_ids: 735d146c-a4b2-4327-a057-d109e0905e05: 'Upload files' a4ad947c-9669-497c-9988-24351955a02f: 'Files listing' width: 80 height: 550 link_text: 'Select files' auto_open: true
What I like is the width to be width: '80%' I'm using the modal widget.