如何使用plotly为分组条形图添加标签？

import plotly.express as px
import pandas as pd

df = pd.DataFrame({'Group': ['A', 'A', 'B', 'B', 'C', 'C'],
                   'Category': ['X', 'Y', 'X', 'Y', 'X', 'Y'],
                   'Value': [1, 2, 3, 4, 5, 6]})

fig = px.bar(df, x='Group', y='Value', color='Category', barmode='group')

fig.update_traces(text=df['Value'], textposition='inside')

fig.update_layout(title='Grouped Bar Chart with Labels',
                  xaxis_title='Group',
                  yaxis_title='Value')

fig.show()