How to disable jupyter widget button by using toggle button?

I have a problem on disabling a certain button when I press a togglebutton. I know most would suggest using link but on my case I cannot use it since my toggle button is also linked with another textarea which has opposite disable status. Here is my code to make it more clear

degree_text=widgets.BoundedIntText(
    min=0,
    max=360,
    step=1,
    description='Color Degree',
    disabled=False
)

lock = widgets.ToggleButton(description = "Lock",layout=space_between)

start_button = widgets.Button(
    description='Start',
    button_style='success',
    tooltip='Click to start reconstruction',
    icon='check', # (FontAwesome names without the `fa-` prefix)
    layout = space_between,
    disabled=True
)

link((lock,'value'),(degree_text,'disabled'))
#cant use link because I need the degree text and start button to have opposite disabled status
#link((lock,'value'),(start_button,'disabled'))

Hope someone can help me with it, Thanks