diff --git a/demo/DownloadFile.php b/demo/DownloadFile.php
index 872bbe3..f4d0c39 100644
--- a/demo/DownloadFile.php
+++ b/demo/DownloadFile.php
@@ -27,6 +27,10 @@
 	$fp2 = fopen(dirname(__FILE__). '/downloadImage.jpg', 'wb');
 	$api->downloadBody($obj, $fp2);
 	echo "Download is done! Please see downloadImage.jpg\n";
+
+    // publish file
+    $url = $api->publish($obj);
+	echo "publish URL=". $url. "\n";
 	
 } catch (CloudException $e) {
 	echo 'failed to call Kii API '. $e->getStatus();
diff --git a/src/ObjectAPI.php b/src/ObjectAPI.php
index ca7475a..605f295 100644
--- a/src/ObjectAPI.php
+++ b/src/ObjectAPI.php
@@ -15,6 +15,8 @@ public function delete(KiiObject $object);
     public function updateBody(KiiObject $object, $contentType, $data);
 
     public function downloadBody(KiiObject $object, $fp);
+
+    public function publish(KiiObject $object);
 }
 
 ?>
\ No newline at end of file
diff --git a/src/kii/KiiObjectAPI.php b/src/kii/KiiObjectAPI.php
index e1adb3e..4bec84d 100644
--- a/src/kii/KiiObjectAPI.php
+++ b/src/kii/KiiObjectAPI.php
@@ -187,6 +187,27 @@ public function downloadBody(KiiObject $object, $fp) {
         }
         throw new CloudException($resp->getStatus(), $resp->getAsJson());
     }
+
+    public function publish(KiiObject $object) {
+        $c = $this->context;
+        $url = $c->getServerUrl().
+            '/apps/'. $c->getAppId().
+            $object->getPath().
+            '/body/publish';
+
+        $client = $c->getNewClient();
+        $client->setUrl($url);
+        $client->setMethod(HttpClient::HTTP_POST);
+        $client->setKiiHeader($c, TRUE);
+        $client->setContentType('application/vnd.kii.ObjectBodyPublicationRequest+json');
+
+        $resp = $client->sendJson(null);
+        if ($resp->getStatus() == 201) {
+            $respJson = $resp->getAsJson();
+            return $respJson['url'];
+        }
+        throw new CloudException($resp->getStatus(), $resp->getAsJson());        
+    }
 }
 
 ?>
\ No newline at end of file