Nette\Forms\Controls\MultiChoiceControl::loadHttpData PHP Method

    public function loadHttpData()
    {
        $this->value = array_keys(array_flip($this->getHttpData(Nette\Forms\Form::DATA_TEXT)));
        if (is_array($this->disabled)) {
            $this->value = array_diff($this->value, array_keys($this->disabled));
        }
    }