diff --git a/.github/user_bug_report.md b/.github/user_bug_report.md
index 9e5f2a5..4b92a8e 100755
--- a/.github/user_bug_report.md
+++ b/.github/user_bug_report.md
@@ -8,9 +8,11 @@ assignees: ''
 ---
 
 # Bug Description
+
 A clear and concise description of what the bug is.
 
 # How to Reproduce
+
 Steps to reproduce the behavior:
 
 1. Go to '...'
@@ -19,16 +21,20 @@ Steps to reproduce the behavior:
 4. See error
 
 # Expected Behavior
+
 A clear and concise description of what you expected to happen.
 
 # Screenshots
+
 If applicable, add screenshots to help explain your problem.
 
 # System Information
- - System: [e.g. PC or iPhone11, ...]
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
- - KarakaVersion [e.g. 22]
+
+- System: [e.g. PC or iPhone11, ...]
+- OS: [e.g. iOS]
+- Browser [e.g. chrome, safari]
+- KarakaVersion [e.g. 22]
 
 # Additional Information
+
 Add any other context about the problem here.
diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index dfce3f6..b471e31 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -73,7 +73,7 @@ final class ApiController extends Controller
     private function validateNavElementCreate(RequestAbstract $request) : array
     {
         $val = [];
-        if (($val['name'] = empty($request->getData('name')))) {
+        if (($val['name'] = !$request->hasData('name'))) {
             return $val;
         }
 
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index f090997..5fab161 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -55,7 +55,7 @@ final class BackendController extends Controller
             $this->app->accountManager->get($request->header->account),
             $this->app->dbPool,
             $this->app->unitId,
-            $this->app->appName
+            $this->app->appId
         );
 
         $navView = new NavigationView($this->app->l11nManager, $request, $response);
@@ -84,7 +84,7 @@ final class BackendController extends Controller
             $this->app->accountManager->get($request->header->account),
             $this->app->dbPool,
             $this->app->unitId,
-            $this->app->appName
+            $this->app->appId
         );
 
         $nav = new NavigationView($this->app->l11nManager, $request, $response);
@@ -150,7 +150,7 @@ final class BackendController extends Controller
             $this->app->accountManager->get($request->header->account),
             $this->app->dbPool,
             $this->app->unitId,
-            $this->app->appName
+            $this->app->appId
         );
 
         $navView = new NavigationView($this->app->l11nManager, $request, $response);
diff --git a/Models/Navigation.php b/Models/Navigation.php
index a313875..380317e 100755
--- a/Models/Navigation.php
+++ b/Models/Navigation.php
@@ -62,14 +62,14 @@ class Navigation
      * @param Account         $account Account
      * @param DatabasePool    $dbPool  Database pool
      * @param int             $unit    Unit
-     * @param string          $appName App name
+     * @param int             $appId   App id
      *
      * @since 1.0.0
      */
-    private function __construct(RequestAbstract $request, Account $account, DatabasePool $dbPool, int $unit, string $appName)
+    private function __construct(RequestAbstract $request, Account $account, DatabasePool $dbPool, int $unit, int $appId)
     {
         $this->dbPool = $dbPool;
-        $this->load($request->getHash(), $account, $unit, $appName);
+        $this->load($request->getHash(), $account, $unit, $appId);
     }
 
     /**
@@ -78,13 +78,13 @@ class Navigation
      * @param string[] $hashes  Request hashes
      * @param Account  $account Account
      * @param int      $unit    Unit
-     * @param string   $app     App name
+     * @param int   $app     App name
      *
      * @return void
      *
      * @since 1.0.0
      */
-    private function load(array $hashes, Account $account, int $unit, string $app) : void
+    private function load(array $hashes, Account $account, int $unit, int $app) : void
     {
         if (empty($this->nav)) {
             $this->nav = [];
@@ -161,7 +161,7 @@ class Navigation
      * @param Account         $account Account
      * @param DatabasePool    $dbPool  Database pool
      * @param int             $unit    Unit
-     * @param string          $appName App name
+     * @param int             $appId App name
      *
      * @return \Modules\Navigation\Models\Navigation
      *
@@ -169,14 +169,14 @@ class Navigation
      *
      * @since 1.0.0
      */
-    public static function getInstance(RequestAbstract $hashes = null, Account $account, DatabasePool $dbPool, int $unit, string $appName)
+    public static function getInstance(RequestAbstract $hashes = null, Account $account, DatabasePool $dbPool, int $unit, int $appId)
     {
         if (!isset(self::$instance)) {
             if (!isset($hashes)) {
                 throw new \Exception('Invalid parameters');
             }
 
-            self::$instance = new self($hashes, $account, $dbPool, $unit, $appName);
+            self::$instance = new self($hashes, $account, $dbPool, $unit, $appId);
         }
 
         return self::$instance;
diff --git a/tests/Controller/SearchControllerTest.php b/tests/Controller/SearchControllerTest.php
index 380049a..3c10ebb 100755
--- a/tests/Controller/SearchControllerTest.php
+++ b/tests/Controller/SearchControllerTest.php
@@ -72,7 +72,7 @@ final class SearchControllerTest extends \PHPUnit\Framework\TestCase
 
         $permission = new AccountPermission();
         $permission->setUnit(1);
-        $permission->setApp('backend');
+        $permission->setApp(2);
         $permission->setPermission(
             PermissionType::READ
             | PermissionType::CREATE