function filter_translations($translation, $text, $woocommerce) {
	if ($woocommerce == 'tribe-events-calendar') {
		switch ($text) {
		case 'paypal':
		$translation = 'Proceed to check outt';
		break;
	}

	}
	return $translation;
}
add_filter('gettext', 'filter_translations', 10, 3);