Update edit-caption.js

examples/edit-caption.js

@@ -11,7 +11,7 @@ bot.on('/start', msg => {
         msg.from.id, photoUrl, {caption: 'This is a default caption.'}
     ).then(re => {
         // Get message id and chat
-        lastMessage = [msg.from.id, re.result.message_id];
+        lastMessage = [msg.from.id, re.message_id];
         bot.sendMessage(msg.from.id, 'Now set a new caption using /edit <caption>');
     });