diff --git a/qmlnotifyservice.h b/qmlnotifyservice.h
index a7cbcce..c4b6279 100644
--- a/qmlnotifyservice.h
+++ b/qmlnotifyservice.h
@@ -9,18 +9,59 @@ class QQmlApplicationEngine;
 /**
  * Simple notify service for qml.
  * Use :
+ * @code{cpp} 
  * #include <qmlnotifyservice.h>
- *
  * QmlNotificationService::init();
  * auto service = QmlNotificationService::NotificationService::getService()
  * service->setNotify("title", "text", "UrlOfImage", NotificationData::Normal)
- *
+ * @endcode 
  *
  * in qml :
- *
+ * @code{qml}
  *  NotificationServiceView {
         anchors.fill: parent;
     }
+ * @endcode
+ * Questions
+ * CPP
+ * @code{cpp}
+ #include <qmlnotifyservice.h>
+
+ int main() {
+     QmlNotificationService::init();
+     auto service = QmlNotificationService::NotificationService::getService();
+     int questionCode = service->setQuestion("title", "some text");
+
+     QObject::connect(service, QmlNotificationService::NotificationService::questionCompleted,
+                     [questionCode](bool accepted, int questionCode) {
+                         if (accepted && code === questionCode) {
+                            // your action here. 
+                         }
+                     })
+
+     
+ }
+ * @endcode
+ * QML
+ * @code{qml}
+  NotificationServiceView {
+     anchors.fill: parent;
+ }
+ 
+readonly property int questionCode: 0;
+
+questionCode = notificationService.setQuestion(qsTr("Remove %0 user").arg(userModel.userId),
+                                qsTr("All saved data and records will be delete, Do you want continuee?"))
+Connections {
+    target: notificationService
+    function onQuestionCompleted(accepted, code) {
+        if (accepted && code === privateRoot.questionCode) {
+            if (userModel)
+                backEnd.removeUser(userModel.userId)
+        }
+    }
+}
+ * @endcode   
  */
 namespace QmlNotificationService {
     bool NOTIFYSERVICESHARED_EXPORT init(QQmlApplicationEngine *engine);