How can I change the bgcolor of a container after set it?

[armando-palacio]

Question

Hello, I'm trying to change the back-ground color of a container to a different color after add it to the page, as show the code below. The problem I am having is that when I try to set the color using row.bgcolor='color', this introduces a tuple in the variable that does not allow me to display the color I have set, and I don't know why this is happening. I would appreciate your help

Code sample

import flet as ft

def main(page: ft.Page):
    row = ft.Container(
        content=ft.Text("Hola Mundo", color='red'),  
        border_radius=5,
        animate= ft.animation.Animation(2000, ft.AnimationCurve.EASE_IN_OUT_SINE),
        bgcolor = 'white',
    )
    page.add(row)
    page.update()
    

    print(row)
    row.bgcolor = 'black',
    page.update()
    
    print(row)

ft.app(target=main)

Error message

container {'bgcolor': 'white', 'borderradius': '5', 'animate': '{"duration":2000,"curve":"easeInOutSine"}'}
container {'bgcolor': ('black',), 'borderradius': '5', 'animate': '{"duration":2000,"curve":"easeInOutSine"}'}

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• I have searched for answers to my question both in the issues and in previous discussions.