Problem with none-English installs (adminbar graph)

Hi. I would like touse this plugin however, there is a problem in graph part.
I have found the part of code that causes the problem. I think you should not use i18n functions as they may replace numeric characters to arabic/persian numeric characters which can not be used in queries on columns.php file:

$dt = new DateTime();
		$date = $dt->format( 'Y-m-d\TH:i:s.v' );
		$year = date_i18n( 'Y', $date );
		$month = date_i18n( 'm', $date );
		$week = date_i18n( 'W', $date );
		$day = date_i18n( 'd', $date );
		
		$views = pvc_get_views( array(
			'post_id'		=> $post->ID,
			'post_type'		=> $post->post_type,
			'fields'		=> 'date=>views',
			'views_query'	=> array(
				'year'	=> $year,
				// 'week'	=> $week,
				'month'	=> $month,
				// 'day'	=> $day
			)
		) );