Arabic Translations not work when convert from Hijri date to Gregorian Date

[rcweb2]

Arabic Translations not work when convert from Hijri date to Gregorian Date.

require DIR . '/vendor/autoload.php';

use GeniusTS\HijriDate\Date;

use GeniusTS\HijriDate\Translations\Arabic;

\GeniusTS\HijriDate\Date::setTranslation(new Arabic);

Date::setDefaultNumbers(Date::INDIAN_NUMBERS);

//$date = \GeniusTS\HijriDate\Hijri::convertToGregorian(05,07,1390);

only work with class function :
now();
today();
tomorrow();
yesterday();

Also, there is difficulty in writing dates as a variable.

thanks for any help.