How to update a custom filed in the database

Hello, i have created a new filed in the wp_user table which i’m storing the date of birth of the user. The issue that i have is that is not updating the value and i dont know why. I’m using the wp_get_current_user to get the current user id which is working fine and then i have used the wp_update_user but also the update_user_meta but is not working. here is my code

wp_update_user( array ( ‘ID’ => $current_user->ID, ‘user_birthday’ => $date) ) ;
update_user_meta($current_user->ID, ‘user_birthday’,$date) ;

what i’m doing wrong?