Update README.md

README.md

@@ -354,21 +354,9 @@ These below steps are required for iOS In-App Messages.
 ### Message Center
 
 - Get the Message Center messages list using,
-```
-Each Message Center message now supports an additional property called custom key-value pairs, it is a variable sized object with key value pairs and can be accessed like any other property of that message.
-
-```
 
 	```javascript
 	PushIOManager.fetchMessagesForMessageCenter(messageCenterName, (error, response) => {
-        if(error == null) {
-            for(message of response.messages){
-                console.log(message.messageID)
-                console.log(message.message)
-                console.log(message.customKeyValuePairs)
-            
-            }
-        }
 
 	});
 	```
@@ -393,7 +381,6 @@ componentDidMount() {
         console.log(response);
   	  );
 }
-
 componentWillUnmount() {
 	if (this.messageCenterListener) {
 		this.messageCenterListener.remove();
@@ -407,12 +394,26 @@ useEffect(() => {
  	const messageCenterListener = PushIOManager.addMessageCenterUpdateListener((response) =>
         console.log(response);
   	  );
-
 	return () => {
 		messageCenterListener.remove()
    }; };
 ```
+
+Starting with v6.53.0, each Message Center message supports an additional property called custom key-value pairs, it is a variable sized object with key value pairs and can be accessed like any other property of that message.
+
+	```javascript
+	PushIOManager.fetchMessagesForMessageCenter(messageCenterName, (error, response) => {
+        if(error == null) {
+            for(message of response.messages){
+                console.log(message.messageID)
+                console.log(message.message)
+                console.log(message.customKeyValuePairs)
+            
+            }
+        }
 
+	});
+	```
 
 ### Geofences And Beacons