protected function decodePropValue($hex, $string = false)
    {
        $decodePropValue = '';

        $blobs = str_split($hex, 6);

        foreach ($blobs as $blob) {
            $bin = decbin(hexdec($blob));

            $controlY = substr($bin, 4, 6);
            $nibbleY = substr($bin, 10, 4);
            $controlX = substr($bin, 14, 6);
            $nibbleX = substr($bin, 20, 4);

            $byte = $this->nibbleControl($nibbleX, $controlX).$this->nibbleControl($nibbleY, $controlY);

            if ($string) {
                $decodePropValue .= MbString::chr(bindec($byte));
            } else {
                $decodePropValue = $this->dec2hex(bindec($byte)).$decodePropValue;
            }
        }

        return $decodePropValue;
    }