Dash Violin plot with box

Dash Python
1

Hi, I am trying to add box in my violin plot in Dash. Below is my code. The violin plots fine but box doesn’t show up. Thanks for helping

    plot= {
        'data': [
            {
                'type': 'violin',
                'x': df['Year'],
                'y': df["Age"],
                'points': False,
                'opacity':0.6,
                'box': "True",
            }
        ],
        'layout': {
            'title':'Graph1',            
        }
    }