public function cmdSetConfig()
    {
        $key = $this->getParam(0);
        $value = $this->getParam(1);

        if (!isset($key) || !isset($value)) {
            $this->errorAndExit($this->text('Invalid command'));
        }

        if (!$this->config->set($key, $value)) {
            $this->errorAndExit($this->text('Unexpected result'));
        }

        $this->output();
    }