diff --git a/config/module.config.php b/config/module.config.php
index 41600e0..02477fe 100644
--- a/config/module.config.php
+++ b/config/module.config.php
@@ -109,6 +109,7 @@
             'pserver_user_panel_service'	    => 'PServerCMS\Service\UserPanel',
             'pserver_user_role_service'	        => 'PServerCMS\Service\UserRole',
             'pserver_login_history_service'	    => 'PServerCMS\Service\LoginHistory',
+            'pserver_coin_service'	            => 'PServerCMS\Service\Coin',
 		],
         'aliases' => [
             'translator' => 'MvcTranslator',
diff --git a/src/PServerCMS/Form/ChangePwd.php b/src/PServerCMS/Form/ChangePwd.php
index ee2ade2..2294088 100644
--- a/src/PServerCMS/Form/ChangePwd.php
+++ b/src/PServerCMS/Form/ChangePwd.php
@@ -5,9 +5,11 @@
 use Zend\Form\Element;
 use ZfcBase\Form\ProvidesEventsForm;
 
-class ChangePwd extends ProvidesEventsForm{
+class ChangePwd extends ProvidesEventsForm
+{
 
-    public function __construct(){
+    public function __construct()
+    {
         parent::__construct();
 
 		$this->add(array(
@@ -59,8 +61,8 @@ public function __construct(){
      * @param $which
      * @return $this
      */
-    public function setWhich($which){
-        $bool = $this->hasAttribute('which');
+    public function setWhich($which)
+    {
         $hidden = new Element\Hidden('which');
         $hidden->setLabel(' ');
         $hidden->setValue($which);
diff --git a/src/PServerCMS/Form/ChangePwdFilter.php b/src/PServerCMS/Form/ChangePwdFilter.php
index a1205d7..ec9e727 100644
--- a/src/PServerCMS/Form/ChangePwdFilter.php
+++ b/src/PServerCMS/Form/ChangePwdFilter.php
@@ -4,11 +4,11 @@
 
 use ZfcBase\InputFilter\ProvidesEventsInputFilter;
 
-class ChangePwdFilter extends ProvidesEventsInputFilter{
-
-
-    public function __construct(){
+class ChangePwdFilter extends ProvidesEventsInputFilter
+{
 
+    public function __construct()
+    {
         $this->add(array(
             'name'       => 'currentPassword',
             'required'   => true,
diff --git a/src/PServerCMS/Form/Password.php b/src/PServerCMS/Form/Password.php
index 5a814eb..6a07e77 100644
--- a/src/PServerCMS/Form/Password.php
+++ b/src/PServerCMS/Form/Password.php
@@ -7,7 +7,8 @@
 use ZfcBase\Form\ProvidesEventsForm;
 use Zend\ServiceManager\ServiceLocatorInterface;
 
-class Password extends ProvidesEventsForm {
+class Password extends ProvidesEventsForm
+{
 
 	/** @var  ServiceLocatorInterface */
 	protected $serviceManager;
@@ -17,7 +18,8 @@ class Password extends ProvidesEventsForm {
 	protected $entityManager;
 
 
-	public function __construct( ServiceLocatorInterface $serviceLocatorInterface ) {
+	public function __construct( ServiceLocatorInterface $serviceLocatorInterface )
+    {
 		parent::__construct();
 		$this->setServiceManager($serviceLocatorInterface);
 
@@ -64,7 +66,8 @@ public function __construct( ServiceLocatorInterface $serviceLocatorInterface )
 	/**
 	 * @param User $user
 	 */
-	public function addSecretQuestion(User $user){
+	public function addSecretQuestion(User $user)
+    {
 		if(!$this->getServiceManager()->get('pserver_configread_service')->get('pserver.password.secret_question')){
 			return;
 		}
@@ -105,14 +108,16 @@ public function addSecretQuestion(User $user){
 	/**
 	 * @param User $user
 	 */
-	public function setUser( User $user ){
+	public function setUser( User $user )
+    {
 		$this->user = $user;
 	}
 
 	/**
 	 * @return User
 	 */
-	public function getUser(){
+	public function getUser()
+    {
 		return $this->user;
 	}
 
@@ -121,7 +126,8 @@ public function getUser(){
 	 *
 	 * @return $this
 	 */
-	protected function setServiceManager( ServiceLocatorInterface $oServiceManager ) {
+	protected function setServiceManager( ServiceLocatorInterface $oServiceManager )
+    {
 		$this->serviceManager = $oServiceManager;
 
 		return $this;
@@ -130,7 +136,8 @@ protected function setServiceManager( ServiceLocatorInterface $oServiceManager )
 	/**
 	 * @return \Doctrine\ORM\EntityManager
 	 */
-	public function getEntityManager() {
+	public function getEntityManager()
+    {
 		if (!$this->entityManager) {
 			$this->entityManager = $this->getServiceManager()->get('Doctrine\ORM\EntityManager');
 		}
@@ -141,14 +148,16 @@ public function getEntityManager() {
 	/**
 	 * @return ServiceLocatorInterface
 	 */
-	protected function getServiceManager() {
+	protected function getServiceManager()
+    {
 		return $this->serviceManager;
 	}
 
 	/**
 	 * @return \PServerCMS\Options\EntityOptions
 	 */
-	protected function getEntityOptions(){
+	protected function getEntityOptions()
+    {
 		return $this->getServiceManager()->get('pserver_entity_options');
 	}
 } 
\ No newline at end of file
diff --git a/src/PServerCMS/Form/PwLost.php b/src/PServerCMS/Form/PwLost.php
index e8039d9..7b6e144 100644
--- a/src/PServerCMS/Form/PwLost.php
+++ b/src/PServerCMS/Form/PwLost.php
@@ -8,9 +8,11 @@
 use ZfcBase\Form\ProvidesEventsForm;
 use Zend\Form\Element\Captcha;
 
-class PwLost extends ProvidesEventsForm {
+class PwLost extends ProvidesEventsForm
+{
 
-	public function __construct( ServiceLocatorInterface $sm ) {
+	public function __construct( ServiceLocatorInterface $sm )
+    {
 		parent::__construct();
 
 		$this->add(array(
diff --git a/src/PServerCMS/Form/PwLostFilter.php b/src/PServerCMS/Form/PwLostFilter.php
index aca197f..1a3a113 100644
--- a/src/PServerCMS/Form/PwLostFilter.php
+++ b/src/PServerCMS/Form/PwLostFilter.php
@@ -11,7 +11,8 @@ class PwLostFilter extends ProvidesEventsInputFilter
     protected $userValidator;
 
 
-	public function __construct( AbstractRecord $userValidator ){
+	public function __construct( AbstractRecord $userValidator )
+    {
         $this->setUserValidator( $userValidator );
 
 		$this->add(array(
@@ -33,7 +34,8 @@ public function __construct( AbstractRecord $userValidator ){
     /**
      * @return AbstractRecord
      */
-    public function getUserValidator()	{
+    public function getUserValidator()
+    {
         return $this->userValidator;
     }
 
@@ -42,7 +44,8 @@ public function getUserValidator()	{
      *
      * @return $this
      */
-    public function setUserValidator($userValidator) {
+    public function setUserValidator($userValidator)
+    {
         $this->userValidator = $userValidator;
         return $this;
     }
diff --git a/src/PServerCMS/Form/Register.php b/src/PServerCMS/Form/Register.php
index e88a6b0..498319a 100644
--- a/src/PServerCMS/Form/Register.php
+++ b/src/PServerCMS/Form/Register.php
@@ -8,9 +8,11 @@
 use ZfcBase\Form\ProvidesEventsForm;
 use Zend\Form\Element\Captcha;
 
-class Register extends ProvidesEventsForm {
+class Register extends ProvidesEventsForm
+{
 
-	public function __construct( ServiceLocatorInterface $sm ) {
+	public function __construct( ServiceLocatorInterface $sm )
+    {
 		parent::__construct();
 
 		$this->add(array(
diff --git a/src/PServerCMS/Form/RegisterFilter.php b/src/PServerCMS/Form/RegisterFilter.php
index facf22a..3bf8baf 100644
--- a/src/PServerCMS/Form/RegisterFilter.php
+++ b/src/PServerCMS/Form/RegisterFilter.php
@@ -7,7 +7,8 @@
 use PServerCMS\Validator;
 use Zend\ServiceManager\ServiceManager;
 
-class RegisterFilter extends ProvidesEventsInputFilter {
+class RegisterFilter extends ProvidesEventsInputFilter
+{
 	protected $serviceManager;
 	protected $entityManager;
 
@@ -17,7 +18,8 @@ class RegisterFilter extends ProvidesEventsInputFilter {
 	protected $striposValidator;
 
 
-	public function __construct( ServiceManager $serviceManager ){
+	public function __construct( ServiceManager $serviceManager )
+    {
 
 		$this->setServiceManager($serviceManager);
 
diff --git a/src/PServerCMS/Service/Coin.php b/src/PServerCMS/Service/Coin.php
new file mode 100644
index 0000000..2f1da7b
--- /dev/null
+++ b/src/PServerCMS/Service/Coin.php
@@ -0,0 +1,60 @@
+<?php
+
+
+namespace PServerCMS\Service;
+
+use PServerCMS\Entity\UserInterface;
+
+class Coin extends InvokableBase
+{
+
+    /**
+     * @param $data
+     * @param $user
+     * @return bool
+     */
+    public function addCoinsForm($data, $userId)
+    {
+        $form = $this->getForm();
+        $form->setData($data);
+
+        if(!$form->isValid()){
+            return false;
+        }
+        $user = $this->getUser4Id($userId);
+        
+        if ($user) {
+            $data = $form->getData();
+            $this->addCoins($user, $data['coins']);
+        }
+
+        return true;
+    }
+
+    /**
+     * @param UserInterface $user
+     * @return int
+     */
+    public function getCoinsOfUser( UserInterface $user )
+    {
+        return $this->getGameBackendService()->getCoins($user);
+    }
+
+    /**
+     * @param UserInterface $user
+     * @param               $amount
+     * @return bool
+     */
+    public function addCoins( UserInterface $user, $amount )
+    {
+        return $this->getGameBackendService()->setCoins($user, $amount);
+    }
+
+    /**
+     * @return \ZfcBase\Form\ProvidesEventsForm
+     */
+    public function getForm()
+    {
+        return $this->getService('pserver_admin_coin_form');
+    }
+}
\ No newline at end of file
diff --git a/src/PServerCMS/Service/Download.php b/src/PServerCMS/Service/Download.php
index f0de79e..6f773fa 100644
--- a/src/PServerCMS/Service/Download.php
+++ b/src/PServerCMS/Service/Download.php
@@ -6,15 +6,14 @@
 use PServerCMS\Entity\DownloadList;
 use PServerCMS\Keys\Caching;
 
-class Download extends InvokableBase {
-	/** @var \PServerAdmin\Form\Download */
-	protected $downloadForm;
+class Download extends InvokableBase
+{
 
 	/**
 	 * @return \PServerCMS\Entity\DownloadList[]
 	 */
-	public function getActiveList(){
-
+	public function getActiveList()
+    {
 		$downloadInfo = $this->getCachingHelperService()->getItem(Caching::DOWNLOAD, function() {
 			/** @var \PServerCMS\Entity\Repository\DownloadList $repository */
 			$repository = $this->getEntityManager()->getRepository($this->getEntityOptions()->getDownloadList());
@@ -27,13 +26,19 @@ public function getActiveList(){
 	/**
 	 * @return null|\PServerCMS\Entity\DownloadList[]
 	 */
-	public function getDownloadList(){
+	public function getDownloadList()
+    {
 		/** @var \PServerCMS\Entity\Repository\DownloadList $repository */
 		$repository = $this->getEntityManager()->getRepository($this->getEntityOptions()->getDownloadList());
 		return $repository->getDownloadList();
 	}
 
-	public function getDownload4Id( $id ){
+    /**
+     * @param $id
+     * @return null|DownloadList
+     */
+	public function getDownload4Id( $id )
+    {
 		/** @var \PServerCMS\Entity\Repository\DownloadList $repository */
 		$repository = $this->getEntityManager()->getRepository($this->getEntityOptions()->getDownloadList());
 		return $repository->getDownload4Id($id);
@@ -45,7 +50,8 @@ public function getDownload4Id( $id ){
 	 *
 	 * @return bool|DownloadList
 	 */
-	public function download( array $data, $currentDownload = null){
+	public function download( array $data, $currentDownload = null)
+    {
 		if($currentDownload == null){
 			$currentDownload = new DownloadList();
 		}
@@ -71,10 +77,8 @@ public function download( array $data, $currentDownload = null){
 	/**
 	 * @return \PServerAdmin\Form\Download
 	 */
-	public function getDownloadForm(){
-		if(!$this->downloadForm){
-			$this->downloadForm = $this->getServiceManager()->get('pserver_admin_download_form');
-		}
-		return $this->downloadForm;
+	public function getDownloadForm()
+    {
+		return $this->getService('pserver_admin_download_form');
 	}
 } 
\ No newline at end of file
diff --git a/src/PServerCMS/Service/InvokableBase.php b/src/PServerCMS/Service/InvokableBase.php
index 0f5970c..606dd59 100644
--- a/src/PServerCMS/Service/InvokableBase.php
+++ b/src/PServerCMS/Service/InvokableBase.php
@@ -6,33 +6,15 @@
 
 class InvokableBase extends UserBase
 {
-    /** @var \Zend\Cache\Storage\StorageInterface */
-    protected $cachingService;
-    /** @var  CachingHelper */
-    protected $cachingHelperService;
-    /** @var  \GameBackend\DataService\DataServiceInterface */
-    protected $gameBackendService;
-    /** @var  ConfigRead */
-    protected $configReadService;
-    /** @var  UserBlock */
-    protected $userBlockService;
-    /** @var \PServerCMS\Options\EntityOptions */
-    protected $entityOptions;
-    /** @var \PServerCMS\Options\MailOptions */
-    protected $mailOptions;
-    /** @var  \SmallUser\Service\User */
-    protected $userService;
+    /** @var  array|object */
+    protected $serviceCache;
 
     /**
      * @return \Zend\Cache\Storage\StorageInterface
      */
     protected function getCachingService()
     {
-        if (!$this->cachingService) {
-            $this->cachingService = $this->getServiceManager()->get( 'pserver_caching_service' );
-        }
-
-        return $this->cachingService;
+        return $this->getService('pserver_caching_service');
     }
 
     /**
@@ -40,11 +22,7 @@ protected function getCachingService()
      */
     protected function getCachingHelperService()
     {
-        if (!$this->cachingHelperService) {
-            $this->cachingHelperService = $this->getServiceManager()->get( 'pserver_cachinghelper_service' );
-        }
-
-        return $this->cachingHelperService;
+        return $this->getService('pserver_cachinghelper_service');
     }
 
     /**
@@ -52,11 +30,7 @@ protected function getCachingHelperService()
      */
     protected function getGameBackendService()
     {
-        if (!$this->gameBackendService) {
-            $this->gameBackendService = $this->getServiceManager()->get( 'gamebackend_dataservice' );
-        }
-
-        return $this->gameBackendService;
+        return $this->getService('gamebackend_dataservice');
     }
 
     /**
@@ -76,11 +50,7 @@ protected function getUser4Id( $userId )
      */
     protected function getConfigService()
     {
-        if (!$this->configReadService) {
-            $this->configReadService = $this->getServiceManager()->get( 'pserver_configread_service' );
-        }
-
-        return $this->configReadService;
+        return $this->getService('pserver_configread_service');
     }
 
     /**
@@ -88,11 +58,7 @@ protected function getConfigService()
      */
     protected function getUserBlockService()
     {
-        if (!$this->userBlockService) {
-            $this->userBlockService = $this->getServiceManager()->get( 'pserver_user_block_service' );
-        }
-
-        return $this->userBlockService;
+        return $this->getService('pserver_user_block_service');
     }
 
     /**
@@ -100,11 +66,7 @@ protected function getUserBlockService()
      */
     protected function getEntityOptions()
     {
-        if (!$this->entityOptions) {
-            $this->entityOptions = $this->getServiceManager()->get( 'pserver_entity_options' );
-        }
-
-        return $this->entityOptions;
+        return $this->getService('pserver_entity_options');
     }
 
     /**
@@ -112,11 +74,7 @@ protected function getEntityOptions()
      */
     protected function getMailOptions()
     {
-        if (!$this->mailOptions) {
-            $this->mailOptions = $this->getServiceManager()->get( 'pserver_mail_options' );
-        }
-
-        return $this->mailOptions;
+        return $this->getService('pserver_mail_options');
     }
 
     /**
@@ -124,11 +82,7 @@ protected function getMailOptions()
      */
     protected function getUserService()
     {
-        if (!$this->userService) {
-            $this->userService = $this->getServiceManager()->get( 'small_user_service' );
-        }
-
-        return $this->userService;
+        return $this->getService('small_user_service');
     }
 
     /**
@@ -144,4 +98,17 @@ protected function addFormMessagesInFlashMessenger( FormInterface $form, $namesp
             }
         }
     }
+
+    /**
+     * @param $serviceName
+     *
+     * @return array|object
+     */
+    protected function getService( $serviceName )
+    {
+        if (!isset( $this->serviceCache[$serviceName] )) {
+            $this->serviceCache[$serviceName] = $this->getServiceManager()->get( $serviceName );
+        }
+        return $this->serviceCache[$serviceName];
+    }
 } 
\ No newline at end of file
diff --git a/src/PServerCMS/Service/PaymentNotify.php b/src/PServerCMS/Service/PaymentNotify.php
index bec937d..21e2753 100644
--- a/src/PServerCMS/Service/PaymentNotify.php
+++ b/src/PServerCMS/Service/PaymentNotify.php
@@ -36,8 +36,7 @@ public function success( Request $request )
         // save the message if gamebackend-service is unavailable
         $errorMessage = '';
         try {
-            $backend = $this->getGameBackendService();
-            $backend->setCoins( $user, $coins );
+            $this->getCoinService()->addCoins( $user, $coins );
         } catch( \Exception $e ) {
             $request->setStatus( $request::STATUS_ERROR );
             $errorMessage = $e->getMessage();
@@ -145,4 +144,12 @@ protected function isDonateAlreadyAdded( Request $request )
         $donateEntity = $this->getEntityManager()->getRepository( $this->getEntityOptions()->getDonateLog() );
         return $donateEntity->isDonateAlreadyAdded( $request->getTransactionId(), $this->mapPaymentProvider2DonateType( $request ) );
     }
+
+    /**
+     * @return Coin
+     */
+    protected function getCoinService()
+    {
+        return $this->getService('pserver_coin_service');
+    }
 }
\ No newline at end of file