               return value;
                }
            },
            {
                type: 'graph',
                name: 'Sine',
                precision: 2,
                value: -13,
                noText: true,
                noHover: true,
                noGradient: true,
                callback: (value, item) => {
                    // console.log('Sine callback:', value);

                    const y = 0.5 + 0.5 * Math.sin(value++ / 9) * 0.5;
                    item.update(y);

       