diff --git a/src/main/java/cactusServer/entities/Instance.java b/src/main/java/cactusServer/entities/Instance.java
index ce51517..5874cce 100644
--- a/src/main/java/cactusServer/entities/Instance.java
+++ b/src/main/java/cactusServer/entities/Instance.java
@@ -140,10 +140,10 @@
 	}
 
 	public HashMap<String, Object> createObject(Position3D position, Velocity3D velocity,
-			AngularVelocity3D angularVelocity, Quaternion3D angle, Attribute attribute, String model) {
+			AngularVelocity3D angularVelocity, Quaternion3D angle, Attribute attribute, int modelID) {
 		String id = RandomStringGenerator.generateUniqueString(Object.UNIQUE_ID_LENGTH,
 				RandomStringGenerator.ALPHA_NUMERIC, objMap.keySet());
-		Object object = new Object(position, velocity, angularVelocity, angle, attribute, model);
+		Object object = new Object(position, velocity, angularVelocity, angle, attribute, modelID);
 		objMap.put(id, object);
 		universe.place(object.getPlaceable());
 		HashMap<String, Object> returnedMap = new HashMap<>();
diff --git a/src/main/java/cactusServer/entities/Object.java b/src/main/java/cactusServer/entities/Object.java
index d3ae812..722cd9f 100644
--- a/src/main/java/cactusServer/entities/Object.java
+++ b/src/main/java/cactusServer/entities/Object.java
@@ -1,10 +1,15 @@
 package cactusServer.entities;
 
+import org.ntlab.radishforandroidstudio.framework.model3D.Model3D;
+import org.ntlab.radishforandroidstudio.framework.model3D.Object3D;
 import org.ntlab.radishforandroidstudio.framework.model3D.Position3D;
 import org.ntlab.radishforandroidstudio.framework.model3D.Quaternion3D;
 import org.ntlab.radishforandroidstudio.framework.physics.AngularVelocity3D;
 import org.ntlab.radishforandroidstudio.framework.physics.Velocity3D;
+import org.ntlab.radishforandroidstudio.java3d.Box;
+import org.ntlab.radishforandroidstudio.java3d.Primitive;
 
+import cactusServer.models.ObjectModelManager;
 //import framework.model3D.Position3D;
 //import framework.physics.AngularVelocity3D;
 //import framework.physics.Velocity3D;
@@ -16,7 +21,8 @@
 	private AngularVelocity3D angularVelocity;
 	private Quaternion3D angle;
 	private Attribute attribute;
-	private String model;
+	private Model3D model;
+	private Primitive prim = new Box();
 
 	@JSONHint(ignore = true)
 	public static final int UNIQUE_ID_LENGTH = 12;
@@ -27,13 +33,15 @@
 	}
 
 	public Object(Position3D position, Velocity3D velocity, AngularVelocity3D angularVelocity, Quaternion3D angle,
-			Attribute attribute, String model) {
+			Attribute attribute, int modelID) {
 		setPosition(position);
 		setVelocity(velocity);
 		setAngularVelocity(angularVelocity);
 		setAngle(angle);
 		setAttribute(attribute);
-		setModel(model);
+		setModel(modelID);
+		Object3D object = new Object3D("",prim);
+		setPlaceable(object);
 	}
 
 	public Position3D getPosition() {
@@ -51,12 +59,12 @@
 	public Quaternion3D getAngle() {
 		return angle;
 	}
-	
+
 	public Attribute getAttribute() {
 		return attribute;
 	}
 
-	public String getModel() {
+	public Model3D getModel() {
 		return model;
 	}
 
@@ -80,8 +88,8 @@
 		this.attribute = attribute;
 	}
 
-	public void setModel(String model) {
-		this.model = model;
+	public void setModel(int modelID) {
+		this.model = ObjectModelManager.getInstance().getObject(modelID);
 	}
 
 	public static class Attribute {
@@ -89,9 +97,9 @@
 		private double cof; // ���C�W��
 
 		private Attribute() {
-			
+
 		}
-		
+
 		public Attribute(boolean moveable, double cof) {
 			setMoveable(moveable);
 			setCof(cof);
diff --git a/src/main/java/cactusServer/resources/ObjectsRest.java b/src/main/java/cactusServer/resources/ObjectsRest.java
index d7dc3da..200610c 100644
--- a/src/main/java/cactusServer/resources/ObjectsRest.java
+++ b/src/main/java/cactusServer/resources/ObjectsRest.java
@@ -28,7 +28,7 @@
 
 	@Path("/{objectId}")
 	@GET
-	//@Produces(MediaType.APPLICATION_JSON)
+	// @Produces(MediaType.APPLICATION_JSON)
 	@Produces(MediaType.TEXT_PLAIN)
 	public String getObject(@PathParam("instanceId") String instanceId, @PathParam("objectId") String objectId) {
 		Instance instance = Instances.getInstance().getInstance(instanceId);
@@ -39,22 +39,22 @@
 	}
 
 	@GET
-	//@Produces(MediaType.APPLICATION_JSON)
+	// @Produces(MediaType.APPLICATION_JSON)
 	@Produces(MediaType.TEXT_PLAIN)
 	public String getObjects(@PathParam("instanceId") String instanceId) {
 		return JSON.encode(Instances.getInstance().getInstance(instanceId).getObjects());
 	}
 
 	@POST
-	//@Produces(MediaType.APPLICATION_JSON)
+	// @Produces(MediaType.APPLICATION_JSON)
 	@Produces(MediaType.TEXT_PLAIN)
-	public String createObject(@PathParam("instanceId") String instanceId,
-			@FormParam("position") Position3D position, @FormParam("velocity") Velocity3D velocity,
-			@FormParam("angularVelocity") AngularVelocity3D angularVelocity, @FormParam("angle") Quaternion3D angle,
-			@FormParam("attribute") Attribute attribute, @FormParam("model") String model) {
+	public String createObject(@PathParam("instanceId") String instanceId, @FormParam("position") Position3D position,
+			@FormParam("velocity") Velocity3D velocity, @FormParam("angularVelocity") AngularVelocity3D angularVelocity,
+			@FormParam("angle") Quaternion3D angle, @FormParam("attribute") Attribute attribute,
+			@FormParam("model") int modelID) {
 		Instance instance = Instances.getInstance().getInstance(instanceId);
 		HashMap<String, Object> idMap = instance.createObject(position, velocity, angularVelocity, angle, attribute,
-				model);
+				modelID);
 		HashMap<String, Object> uriMap = new HashMap<>();
 		for (String id : idMap.keySet()) {
 			String uri = (InstancesRest.INSTANCES_URI + "/" + instanceId + "/objects/") + id;
@@ -65,7 +65,7 @@
 
 	@Path("/{objectId}")
 	@PUT
-	//@Produces(MediaType.APPLICATION_JSON)
+	// @Produces(MediaType.APPLICATION_JSON)
 	@Produces(MediaType.TEXT_PLAIN)
 	public String updateObject(@PathParam("instanceId") String instanceId, @PathParam("objectId") String objectId,
 			@FormParam("position") Position3D position, @FormParam("velocity") Velocity3D velocity,
diff --git a/src/main/java/cactusServer/utils/App.java b/src/main/java/cactusServer/utils/App.java
index 9bdf828..0e7f785 100644
--- a/src/main/java/cactusServer/utils/App.java
+++ b/src/main/java/cactusServer/utils/App.java
@@ -30,6 +30,7 @@
 @ApplicationPath("/rest")
 public class App extends ResourceConfig implements Runnable {
 	private ScheduledThreadPoolExecutor task = new ScheduledThreadPoolExecutor(4);
+	private int instancesSize;
 
 	public App() {
 		ObjectModelManager.getInstance();
@@ -45,6 +46,17 @@
 	@Override
 	public void run() {
 		//System.out.println("�^�X�N�����s");
+		instancesSize = Instances.getInstance().getInstances().size();
+		for(int i=0;i<instancesSize;i++) {
+			Instance instance = Instances.getInstance().getInstances().get(i);
+			int objectsSize = instance.getObjects().size();
+			int playersSize=instance.getCharacters().size();
+			for(int j=0;j<objectsSize;j++) {
+				for(int x=0;x<playersSize;x++) {
+					//PhysicsUtility.checkCollision(instance.)
+				}
+			}
+		}
 	}
 
 	public void start(int interval) {
@@ -79,7 +91,7 @@
 		Instances.getInstance().getPlayers().put("player2", player2);
 		// �_�~�[�I�u�W�F�N�g
 		Instances.getInstance().getInstance("test1").createObject(new Position3D(0, 0, 0), new Velocity3D(),
-				new AngularVelocity3D(), new Quaternion3D(), new Attribute(true,1), new String());
+				new AngularVelocity3D(), new Quaternion3D(), new Attribute(true,1), 0);
 		// �m�F�p
 		// String player1Encode = JSON.encode(player1, true);
 		// String player2Encode = JSON.encode(player2, true);