updating the state of custom field

I can' t get the state to update, I've tried this method, as well as just calling $this->state($updtedState); without the $component.

  protected function setUp(): void
    {
        parent::setUp();

        $this->live(onBlur: true)
            ->afterStateUpdated(function (Component $component, ?string $state, ?string $old) {
                if ($state !== null) {
                    $updatedState = $this->performMathOperation($state);
                    Log::debug($updatedState); //this is the correct value, want to reflect in text input field.
                    
                    $component->state($updatedState); //input not getting updated.
                }
            });
    }
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