diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/MovableObjectModel.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/MovableObjectModel.java
index c4bc8b7..a0f168c 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/MovableObjectModel.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/models/MovableObjectModel.java
@@ -15,6 +15,7 @@
     private RealTime3DFragment fragment;
     private ObjectsConnection objectsConnection;
     private String instanceId;
+    private String objectId;
 
     public MovableObjectModel(RealTime3DFragment fragment, Universe universe) {
         this.fragment = fragment;
@@ -27,9 +28,17 @@
         this.instanceId = id;
     }
 
+    public void setObjectId(String objectId) {
+        this.objectId = objectId;
+    }
+
+    /**
+     * オブジェクトの状態更新
+     *
+     * @param interval 前回の更新からの時間差
+     */
     @Override
     public void update(double interval) {
-
     }