diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/connections/ObjectsConnection.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/connections/ObjectsConnection.java
index e175902..fc6e111 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/connections/ObjectsConnection.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/connections/ObjectsConnection.java
@@ -3,7 +3,7 @@
 import org.ntlab.radishforandroidstudio.framework.network.HttpAsyncConnection;
 
 public class ObjectsConnection extends HttpAsyncConnection {
-    public ObjectsConnection() {
-        super("http://nitta-lab-www.is.konan-u.ac.jp:8080/CactusServer/rest/instances/objects");
+    public ObjectsConnection(String instanceId) {
+        super("http://nitta-lab-www.is.konan-u.ac.jp:8080/CactusServer/rest/instances/" + instanceId + "/objects");
     }
 }