
                    })
                  ),
                  new go.TextBlock({
                    alignment: go.Spot.Center,
                    stroke: 'white',
                    font: 'bold italic 14pt sans-serif',
                    editable: true
                  })
                    .bindTwoWay(
                      'text',
                      'value',
                      (v) => v.toString(),
                      (s) => parseFloat(s)
                    )
                    .bind('stro