diff --git a/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/JoinEventHandler.php b/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/JoinEventHandler.php
index 568b51fa..64817a1d 100644
--- a/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/JoinEventHandler.php
+++ b/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/JoinEventHandler.php
@@ -46,9 +46,18 @@ public function __construct($bot, $logger, JoinEvent $joinEvent)
 
     public function handle()
     {
+        if ($this->joinEvent->isGroupEvent()) {
+            $id = $this->joinEvent->getGroupId();
+        } elseif ($this->joinEvent->isRoomEvent()) {
+            $id = $this->joinEvent->getRoomId();
+        } else {
+            $this->logger->error("Unknown event type");
+            return;
+        }
+
         $this->bot->replyText(
             $this->joinEvent->getReplyToken(),
-            sprintf('Joined %s %s', $this->joinEvent->getType(), $this->joinEvent->getUserId())
+            sprintf('Joined %s %s', $this->joinEvent->getType(), $id)
         );
     }
 }
diff --git a/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/LeaveEventHandler.php b/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/LeaveEventHandler.php
index 90fcc96c..5c659c07 100644
--- a/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/LeaveEventHandler.php
+++ b/examples/KitchenSink/src/LINEBot/KitchenSink/EventHandler/LeaveEventHandler.php
@@ -46,9 +46,15 @@ public function __construct($bot, $logger, LeaveEvent $leaveEvent)
 
     public function handle()
     {
-        $this->bot->replyText(
-            $this->leaveEvent->getReplyToken(),
-            sprintf('Leaved %s %s', $this->leaveEvent->getType(), $this->leaveEvent->getUserId())
-        );
+        if ($this->leaveEvent->isGroupEvent()) {
+            $id = $this->leaveEvent->getGroupId();
+        } elseif ($this->leaveEvent->isRoomEvent()) {
+            $id = $this->leaveEvent->getRoomId();
+        } else {
+            $this->logger->error("Unknown event type");
+            return;
+        }
+
+        $this->logger->info(sprintf('Leaved %s %s', $this->leaveEvent->getType(), $id));
     }
 }
diff --git a/src/LINEBot/Constant/Meta.php b/src/LINEBot/Constant/Meta.php
index e59cb745..da674e2b 100644
--- a/src/LINEBot/Constant/Meta.php
+++ b/src/LINEBot/Constant/Meta.php
@@ -20,5 +20,5 @@
 
 class Meta
 {
-    const VERSION = '1.1.0';
+    const VERSION = '1.2.0';
 }