gettext change confirmation message

change_text_example.php

<?php

// Add this code below to your PMPro Customizations plugin - http://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/

add_filter( 'gettext', 'change_my_cost_example', 20, 3 );
/**
 * @link http://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
 */
add_filter( 'gettext', 'change_my_cost_example', 20, 3 );
/**
 * @link http://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
 */
function change_my_cost_example( $translated_text, $text, $domain ) {
	switch ( $translated_text ) {
		case 'Thank you for your membership to %s. Your %s membership is now active.':
			$translated_text = __( 'Merci pour votre adhésion à %1$s. Votre adhésion %2$s est maintenant active.', 'paid-memberships-pro' );
			break;
		switch ( $translated_text ) {
			case 'Thank you for your membership to %1$s. Your %2$s membership status is: <b>%3$s</b>.':
				$translated_text = __( 'Merci pour votre adhésion à %1$s. Votre statut de membre %2$s est : <b>%3$s</b>.', 'pmpro-approvals' );
				break;
		}
			return $translated_text;
	}
}