diff --git a/plugins/cipf_plugin/cipf_plugin.php b/plugins/cipf_plugin/cipf_plugin.php
index e9c92ed..c527acd 100644
--- a/plugins/cipf_plugin/cipf_plugin.php
+++ b/plugins/cipf_plugin/cipf_plugin.php
@@ -30,6 +30,7 @@ include_once(PLGNTLS_class::root_path() . 'utils/console_log.php');
 
 include_once(PLGNTLS_class::root_path() . 'php/admin_menu/admin_menu.php');
 include_once(PLGNTLS_class::root_path() . 'php/admin_menu/admin_menu_toggle.php');
+include_once(PLGNTLS_class::root_path() . 'php/admin_menu/menu_content.php');
 
 include_once(PLGNTLS_class::root_path() . 'php/paypal/paypal.php');
 
diff --git a/plugins/cipf_plugin/html/menu/cipf_menu.html b/plugins/cipf_plugin/html/menu/cipf_menu.html
new file mode 100644
index 0000000..044b2e5
--- /dev/null
+++ b/plugins/cipf_plugin/html/menu/cipf_menu.html
@@ -0,0 +1,12 @@
+<!-- https://developer.wordpress.org/reference/hooks/admin_post_action/ -->
+<form method="POST" action="<?php echo admin_url( 'admin-post.php' ); ?>">
+	<input type="hidden" name="action" value="<?php echo $admin_post_paypal; ?>">
+	<?php wp_nonce_field($nonce_paypal['_action'], $nonce_paypal['_name']); ?>
+	<div class="input_wrapper">
+		<input type="radio" id="sandbox" name="<?php echo $sandbox_live['_name']; ?>" value="<?php echo $sandbox_live['sandbox']; ?>" checked />
+		<label for="sandbox">sandbox</label>
+		<input type="radio" id="live" name="<?php echo $sandbox_live['_name']; ?>" value="<?php echo $sandbox_live['live']; ?>" />
+		<label for="live">live</label>
+	</div>
+	<input type="submit" value="send"/>
+</form>
diff --git a/plugins/cipf_plugin/php/admin_menu/admin_menu.php b/plugins/cipf_plugin/php/admin_menu/admin_menu.php
index 18193f9..59b92bb 100644
--- a/plugins/cipf_plugin/php/admin_menu/admin_menu.php
+++ b/plugins/cipf_plugin/php/admin_menu/admin_menu.php
@@ -27,26 +27,6 @@ add_action('admin_menu', 'cipf_plugin_menu_CIPF');
 
 
 
-function add_plugin_content_CIPF() {
-	PLGNTLS_class::debug_infos();
-	$cipfcard = new PLGNTLS_class();
-
-	$my_css = '
-		#mytext {
-			background-color: lightblue;
-		}
-		#mytext_2 {
-			background-color: lightgreen;
-		}
-	';
-	echo $cipfcard->add_to_front( array(
-		array("js/menu/example_menu.js", 'type'=>'module'),
-		"css/menu/menu.css",
-		"PLGNTLS_menu_css" => array('css'=>$my_css),
-		"js/menu/example_menu_2.js",
-		"html/menu/example_menu.html",
-	));
-}
 
 
 /*
@@ -59,17 +39,17 @@ ajax
 - to access the content of the data object properties of the ajax call :
   use $_POST['property_name']
 */
-function cipfcard_menu_fetch_handler() {
-	PLGNTLS_class::debug_infos();
-	return new WP_REST_Response('hello', 200);
-}
-function cipfcard_menu_endpoint() {
-	PLGNTLS_class::debug_infos();
-	register_rest_route('plgntls', '/get_data', array(
-		'methods' => 'POST',
-		'callback' => 'cipfcard_menu_fetch_handler',
-	));
-};
-add_action('rest_api_init', 'cipfcard_menu_endpoint');
+//function cipfcard_menu_fetch_handler() {
+//	PLGNTLS_class::debug_infos();
+//	return new WP_REST_Response('hello', 200);
+//}
+//function cipfcard_menu_endpoint() {
+//	PLGNTLS_class::debug_infos();
+//	register_rest_route('plgntls', '/get_data', array(
+//		'methods' => 'POST',
+//		'callback' => 'cipfcard_menu_fetch_handler',
+//	));
+//};
+//add_action('rest_api_init', 'cipfcard_menu_endpoint');
 
 ?>
diff --git a/plugins/cipf_plugin/php/admin_menu/admin_menu_toggle.php b/plugins/cipf_plugin/php/admin_menu/admin_menu_toggle.php
index c01b58e..4dfda19 100644
--- a/plugins/cipf_plugin/php/admin_menu/admin_menu_toggle.php
+++ b/plugins/cipf_plugin/php/admin_menu/admin_menu_toggle.php
@@ -12,10 +12,11 @@ if (!defined('ABSPATH')) {
 
 
 function toggle_menu_CIPF($menu_page_title, $menu_title, $menu_capability, $menu_slug, $menu_callback) {
+	PLGNTLS_class::debug_infos();
 	$toggle_menu = PLGNTLS_class::TOGGLE_ADMIN_MENU;
 
 	if (false === get_option($toggle_menu['_name'])) {
-		add_option($toggle_menu['_name'], $toggle_menu['hide']);
+		add_option($toggle_menu['_name'], $toggle_menu['hide'], '', 'no');
 	}
 
 	$toggle = get_option($toggle_menu['_name']);
@@ -38,6 +39,7 @@ function toggle_menu_CIPF($menu_page_title, $menu_title, $menu_capability, $menu
 *
 */
 function add_link_to_custer_plugin_CIPF($links) {
+	PLGNTLS_class::debug_infos();
 	$slug_toggle = PLGNTLS_class::SLUG_TOOGLE_ADMIN_MENU;
 	$toggle_menu = PLGNTLS_class::TOGGLE_ADMIN_MENU;
 
@@ -61,6 +63,7 @@ add_filter('plugin_action_links_cipf_plugin/cipf_plugin.php', 'add_link_to_custe
 *
 */
 function toggle_custer_plugin_menu_CIPF() {
+	PLGNTLS_class::debug_infos();
 	$slug_toggle = PLGNTLS_class::SLUG_TOOGLE_ADMIN_MENU;
 	$toggle_menu = PLGNTLS_class::TOGGLE_ADMIN_MENU;
 
diff --git a/plugins/cipf_plugin/php/admin_menu/menu_content.php b/plugins/cipf_plugin/php/admin_menu/menu_content.php
new file mode 100644
index 0000000..d1dd7a7
--- /dev/null
+++ b/plugins/cipf_plugin/php/admin_menu/menu_content.php
@@ -0,0 +1,109 @@
+<?php
+
+/*
+* it means someone outside wp is accessing the file, in this case kill it.
+*/
+if (!defined('ABSPATH')) {
+	die('You can not access this file!');
+}
+
+
+
+
+function add_plugin_content_CIPF() {
+	PLGNTLS_class::debug_infos();
+	$admin_post_paypal = PLGNTLS_class::ADMIN_POST_PAYPAL;
+	$nonce_paypal = PLGNTLS_class::ADMIN_MENU_NONCE_PAYPAL;
+	$sandbox_live = PLGNTLS_class::ADMIN_MENU_PAYPAL_SANDBOX_LIVE;
+
+	ob_start();
+		include(PLGNTLS_class::root_path() . '/html/menu/cipf_menu.html');
+	$html = ob_get_clean();
+	echo $html;
+}
+
+
+
+/*
+* use this hook 'admin_post_{$action}' to receive a form post
+* https://developer.wordpress.org/reference/hooks/admin_post_action/
+*
+* add the url to the action atrtibute of form, and the value of the action in an hidden input
+* <form method="POST" action="<?php echo admin_url( 'admin-post.php' ); ?>">
+*  <input type="hidden" name="action" value="<?php echo $admin_post_patches; ?>">
+*
+*/
+function paypal_credentials_CIPF() {
+	PLGNTLS_class::debug_infos();
+	$nonce_paypal = PLGNTLS_class::ADMIN_MENU_NONCE_PAYPAL;
+	$sandbox_live = PLGNTLS_class::ADMIN_MENU_PAYPAL_SANDBOX_LIVE;
+
+	if (!isset($_POST[$nonce_paypal['_name']])) {
+		redirect_menu_referer_CIPF($_POST);
+		exit;
+	}
+	if (!wp_verify_nonce($_POST[$nonce_paypal['_name']], $nonce_paypal['_action'])) {
+		redirect_menu_referer_CIPF($_POST);
+		exit;
+	}
+
+	// do actions here
+	error_log("received form, _POST: " . json_encode($_POST));
+	$is_sandbox = false;
+	if ($_POST[$sandbox_live['_name']] === $sandbox_live['sandbox']) {
+		$is_sandbox = true;
+	}
+	error_log("is sandbox: " . json_encode($is_sandbox));
+
+	/*
+	const OPTION_PAYPAL = [
+		'_name'=>'cipf_paypal_credentials',
+		'_default' => [
+			'is_sandbox'   =>true,
+			'client_id'    =>PAYPAL_HUGO_SBOX_CLIENT_ID,
+			'client_secret'=>PAYPAL_HUGO_SBOX_CLIENT_SECRET,
+		],
+	];
+	$paypal_credentials_option = get_option(PLGNTLS_class::OPTION_PAYPAL['_name']);
+	if (false === $paypal_credentials_option) {
+		add_option($paypal_credentials_option['_name'], serialize($paypal_credentials_option['_default']), '', 'no');
+	}
+		$patches_option = unserialize($raw_patches_option);
+		$serialize_patches_option = serialize($patches_option);
+		update_option(self::$_patches['_name'], $serialize_patches_option);
+	*/
+
+	redirect_menu_referer_CIPF($_POST);
+}
+add_action('admin_post_'.PLGNTLS_class::ADMIN_POST_PAYPAL, 'paypal_credentials_CIPF');
+
+
+
+
+function redirect_menu_referer_CIPF($post) {
+	PLGNTLS_class::debug_infos();
+	if (!isset($post)) {
+		wp_redirect(admin_url(), 301);
+		exit;
+	}
+	if (is_null($post)) {
+		wp_redirect(admin_url(), 301);
+		exit;
+	}
+	if (empty($post)) {
+		wp_redirect(admin_url(), 301);
+		exit;
+	}
+
+	if (!isset($post['_wp_http_referer'])) {
+		wp_redirect(admin_url(), 301);
+		exit;
+	}
+
+	wp_redirect(home_url($post['_wp_http_referer']), 301);
+	exit;
+}
+
+
+
+?>
diff --git a/plugins/cipf_plugin/utils/plgntls_class.php b/plugins/cipf_plugin/utils/plgntls_class.php
index 8cf5c59..1a76b83 100644
--- a/plugins/cipf_plugin/utils/plgntls_class.php
+++ b/plugins/cipf_plugin/utils/plgntls_class.php
@@ -119,10 +119,21 @@ class PLGNTLS_class {
 	// SHORTCODES
 
 	// OPTIONS
+	const OPTION_PAYPAL = [
+		'_name'=>'cipf_paypal_credentials',
+		'_default' => [
+			'is_sandbox'   =>true,
+			'client_id'    =>PAYPAL_HUGO_SBOX_CLIENT_ID,
+			'client_secret'=>PAYPAL_HUGO_SBOX_CLIENT_SECRET,
+		],
+	];
 
-	// MENU
+	// ADMIN MENU
 	const SLUG_TOOGLE_ADMIN_MENU = ['_name'=>'toogle_admin_menu_url_cipf', 'toggle'=>'toggle', 'show'=>'show', 'hide'=>'hide'];
 	const TOGGLE_ADMIN_MENU = ['_name'=>'toggle_admin_menu_option_cipf', 'show'=>'show', 'hide'=>'hide'];
+	const ADMIN_POST_PAYPAL = 'paypal_credentials_CIPF';
+	const ADMIN_MENU_NONCE_PAYPAL = ['_name'=>'nonce_admin_menu_paypal_cipf', '_action'=>'action_admin_menu_paypal_cipf'];
+	const ADMIN_MENU_PAYPAL_SANDBOX_LIVE = ['_name'=>'sandbox_live', 'sandbox'=>'sandbox', 'live'=>'live'];
 
 	// FORMS
 	const FORM_PROF_COMMANDE_ID = 'prof_commande';
diff --git a/plugins/custer/admin_menu_toggle.php b/plugins/custer/admin_menu_toggle.php
index 89eeff2..77102f9 100644
--- a/plugins/custer/admin_menu_toggle.php
+++ b/plugins/custer/admin_menu_toggle.php
@@ -16,7 +16,7 @@ function toggle_menu($menu_page_title, $menu_title, $menu_capability, $menu_slug
 	$toggle_menu = Custer::OPTION_TOGGLE_MENU;
 
 	if (false === get_option($toggle_menu['_name'])) {
-		add_option($toggle_menu['_name'], $toggle_menu['hide']);
+		add_option($toggle_menu['_name'], $toggle_menu['hide'], '', 'no');
 	}
 
 	$toggle = get_option($toggle_menu['_name']);
diff --git a/plugins/fbpatch/menu/admin_menu_toggle.php b/plugins/fbpatch/menu/admin_menu_toggle.php
index a9f7ec8..cdff7eb 100644
--- a/plugins/fbpatch/menu/admin_menu_toggle.php
+++ b/plugins/fbpatch/menu/admin_menu_toggle.php
@@ -16,7 +16,7 @@ function toggle_menu($menu_page_title, $menu_title, $menu_capability, $menu_slug
 	$toggle_menu = Fbpatch::OPTION_TOGGLE_MENU;
 
 	if (false === get_option($toggle_menu['_name'])) {
-		add_option($toggle_menu['_name'], $toggle_menu['hide']);
+		add_option($toggle_menu['_name'], $toggle_menu['hide'], '', 'no');
 	}
 
 	$toggle = get_option($toggle_menu['_name']);
diff --git a/plugins/fbpatch/menu/menu_content.php b/plugins/fbpatch/menu/menu_content.php
index 2009dce..e0c9b5f 100644
--- a/plugins/fbpatch/menu/menu_content.php
+++ b/plugins/fbpatch/menu/menu_content.php
@@ -28,7 +28,15 @@ function plugin_content() {
 
 
 
-
+/*
+* use this hook 'admin_post_{$action}' to receive a form post
+* https://developer.wordpress.org/reference/hooks/admin_post_action/
+*
+* add the url to the action atrtibute of form, and the value of the action in an hidden input
+* <form method="POST" action="<?php echo admin_url( 'admin-post.php' ); ?>">
+*  <input type="hidden" name="action" value="<?php echo $admin_post_patches; ?>">
+*
+*/
 function patches_choice() {
 	$nonce = Fbpatch::NONCE;
 	if (!isset($_POST[$nonce['_name']])) {
@@ -43,12 +51,12 @@ function patches_choice() {
 	/*
 	* 
 	*
-[24-Mar-2024 12:24:08 UTC] -> _POST {
-	"action":"add_patches",
-	"nonce_name":"7eeb560dc0",
-	"_wp_http_referer":"\/wp-admin\/admin.php?page=fbpatch-plugin",
-	"hide_show":"on"
-}
+		[24-Mar-2024 12:24:08 UTC] -> _POST {
+			"action":"add_patches",
+			"nonce_name":"7eeb560dc0",
+			"_wp_http_referer":"\/wp-admin\/admin.php?page=fbpatch-plugin",
+			"hide_show":"on"
+		}
 	*/
 	$pathes_on = array();
 	foreach($_POST as $key => $value) {
diff --git a/plugins/fbpatch/php/fbpatch_class.php b/plugins/fbpatch/php/fbpatch_class.php
index 079af6e..953b5fd 100644
--- a/plugins/fbpatch/php/fbpatch_class.php
+++ b/plugins/fbpatch/php/fbpatch_class.php
@@ -58,7 +58,7 @@ class Fbpatch {
 		*/
 		$raw_patches_option = get_option(self::$_patches['_name']);
 		if (false === $raw_patches_option) {
-			add_option(self::$_patches['_name']);
+			add_option(self::$_patches['_name'], '', '', 'no');
 		}
 		$patches_option = unserialize($raw_patches_option);
 		if (empty($patches_option)) {