Change/Tranlate text strings for some level checkout pages

my_pmpro_run_gettext_on_specific_level_checkout_pages.php

<?php
/**
 * Change/Tranlate text strings for some level checkout pages
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function my_pmpro_run_gettext_on_specific_level_checkout_pages() {
	
	$levels_to_translate = array( 1, 2, 3, 7 );
	$pmpro_level = pmpro_getLevelAtCheckout();
	
	if ( in_array( $pmpro_level->id, $levels_to_translate ) ) {
		add_filter( 'gettext', 'my_pmpro_gettext_filter_specific_level_checkout_pages', 10, 3 );
	}
		
}
add_action( 'pmpro_checkout_preheader', 'my_pmpro_run_gettext_on_specific_level_checkout_pages' );

function my_pmpro_gettext_filter_specific_level_checkout_pages( $translated, $text, $domain ) {

	switch ( $domain ) {
		case 'paid-memberships-pro':
			switch ( $text ) {				
				case 'You have selected the %s membership level.':
					$translated = 'Ha seleccionado el nivel de membresía %s.';
					break;
			}
			break;
	}

	return $translated;
}