✅ RelayCommand CanExecute MVVM

Hi, I'm using this nuget

CommunityToolkit.Mvvm.Input

CommunityToolkit.Mvvm.Input

to add my relaycommand.
i've set CanExecute this way =>

AddThickCommand = new RelayCommand(AddThickCommand_Execute, () => CanAddThickness);

AddThickCommand = new RelayCommand(AddThickCommand_Execute, () => CanAddThickness);

My problem there is that canexecute is trigger only when i declare

AddThickCommand

AddThickCommand

and canexecute is never raised again even if the boolean

CanAddThickness

CanAddThickness

change.

I'd like to update canexecute each time

CanAddThickness

CanAddThickness

change to enable or not the button. Any idea why this don't work with this package ?