diff --git a/.env b/.env
index ca905fe..1849968 100644
--- a/.env
+++ b/.env
@@ -3,4 +3,4 @@ FACEBOOK_VALIDATION_TOKEN=58eb669e-9a3c-4940-ba2a-45833ed28ff1
 FACEBOOK_PAGE_ACCESS_TOKEN=EAAbiTcER2bkBAConk7qPEvqaIRT0MucHZBCDVxZBqZB14qUofVZCnryAbWxXn9atzofmG5jm98y1iZB5RIMxagxCL6ar0QGS8JzqHEoGTlX9vYTiHMfyyUwFDz7ORZCsSzjzQZCsOOyvCGdgTJva9RvHMNmAP0H7eQ4C2eTmOohGAZDZD
 TELEGRAM_ACCESS_TOKEN=338652885:AAFkX3S6s2GcRbHOkZ5WHAllBhbrf40FPiI
 MONGO_DB_TOKEN=H4411Admin:tNXjN5Au8wXYi0IV
-RECAST_TOKEN=9e3038ff6198a787f1fff329b0b66dab
\ No newline at end of file
+RECAST_TOKEN=9e3038ff6198a787f1fff329b0b66dab
diff --git a/AslanDBConnector.js b/AslanDBConnector.js
index 36a9d2e..5529598 100644
--- a/AslanDBConnector.js
+++ b/AslanDBConnector.js
@@ -34,7 +34,7 @@ exports.getData = function(table, query, callback) {
   });
 }
 
-exports.LoadJSonData = function(filePath) {
+exports.loadJSonData = function(filePath) {
   // Connexion au serveur avec la méthode connect
   mongoClient.connect(url, function (err, db) {
     try{
@@ -58,3 +58,27 @@ exports.LoadJSonData = function(filePath) {
 }
 
 
+exports.replaceDocument = function (filePath) {
+    // Connexion au serveur avec la méthode connect
+    mongoClient.connect(url, function (err, db) {
+        try {
+            if (err) {
+                return console.log('Connection failed', err);
+            }
+            fs.readFile(filePath, 'utf8', function (err, data) {
+                if (err) throw err;
+
+                var json = JSON.parse(data);
+
+                db.collection(GrandLyonCollection).findOneAndReplace({ "doc_id": json.doc_id}, json, function (err, doc) {
+                    console.log("Load done");
+                    if (err) throw err;
+                });
+            });
+        } catch (error) {
+            console.log(error);
+        }
+    });
+}
+
+
diff --git a/data/dataTest.json b/data/dataTest.json
new file mode 100644
index 0000000..7e8d8db
--- /dev/null
+++ b/data/dataTest.json
@@ -0,0 +1,40 @@
+{
+    "features": [
+	
+		{
+			"entity":{
+			
+				"name": "Jackson",
+				"type": "person",
+				"job": "CEO"
+			}
+		},
+		{
+			"entity":{
+			
+				"name": "Edward",
+				"type": "person",
+				"job": "CTO"
+			}
+		},
+		{	
+			"entity":{
+			
+				"name": "Alfred",
+				"type": "person",
+				"job": "Lead Architect"
+			}
+		},
+		{	
+			"entity":{
+			
+				"name": "Aslan",
+				"type": "person",
+				"job": "Intern"
+			}
+		}
+	
+	
+	    ], 
+    "doc_id": "data test"
+}
diff --git a/data/dataTestUpdated.json b/data/dataTestUpdated.json
new file mode 100644
index 0000000..1ee53d7
--- /dev/null
+++ b/data/dataTestUpdated.json
@@ -0,0 +1,48 @@
+{
+    "features": [
+	
+		{
+			"entity":{
+			
+				"name": "Albert",
+				"type": "person",
+				"job": "CEO"
+			}
+		},
+		{	
+			"entity":{
+			
+				"name": "Francis",
+				"type": "person",
+				"job": "CTO"
+			}
+		},
+		{	
+			"entity":{
+			
+				"name": "Alfred",
+				"type": "droid",
+				"job": "Lead Architect"
+			}
+		},
+		{		
+			"entity":{
+			
+				"name": "Aslan",
+				"type": "lion",
+				"job": "mascot"
+			}
+		},
+		{		
+			"entity":{
+			
+				"name": "Boris",
+				"type": "person",
+				"job": "business accountant"
+			}
+		}
+	
+	
+	    ], 
+    "doc_id": "data test"
+}
diff --git a/loadMongoDB.js b/loadMongoDB.js
index 69c3fdd..45ecc8a 100644
--- a/loadMongoDB.js
+++ b/loadMongoDB.js
@@ -1,10 +1,3 @@
-/*
-*   index.js
-*   Point d'entrée de l'application
-*   version 0.1.1
-*   Tiré du tuto http://www.supinfo.com/articles/single/3246-realisez-bot-facebook-messenger-nodejs
-*   https://developers.facebook.com/docs/messenger-platform/guides/quick-start/
-*/
 'use strict';
 
 const aslanDB = require('./AslanDBConnector');
@@ -13,7 +6,7 @@ process.argv.forEach(function (val, index, array) {
   
   if(index > 1)
   {
-    aslanDB.LoadJSonData(array[index]);
+    aslanDB.loadJSonData(array[index]);
   }
 
 });
diff --git a/updateMongoDB.js b/updateMongoDB.js
new file mode 100644
index 0000000..095d00d
--- /dev/null
+++ b/updateMongoDB.js
@@ -0,0 +1,12 @@
+'use strict';
+
+const aslanDB = require('./AslanDBConnector');
+
+process.argv.forEach(function (val, index, array) {
+  
+  if(index > 1)
+  {
+      aslanDB.replaceDocument(array[index]);
+  }
+
+});