diff --git a/src/main/java/cactusServer/entities/Instance.java b/src/main/java/cactusServer/entities/Instance.java
index cf4504b..d324b19 100644
--- a/src/main/java/cactusServer/entities/Instance.java
+++ b/src/main/java/cactusServer/entities/Instance.java
@@ -28,7 +28,7 @@
 public class Instance extends Entity {
 	private String name;
 	private State state;
-	private StageModel stage;
+	private String stage;
 
 	private HashMap<String, Area> areaMap = new HashMap<>();
 	private HashMap<String, Object> objMap = new HashMap<>();
@@ -43,7 +43,7 @@
 	 * (�����͌����_�ł̉��̂���)
 	 * @param name �C���X�^���X��
 	 */
-	public Instance(String name, State state, StageModel stageModel) {
+	public Instance(String name, State state, String stageModel) {
 		setName(name);
 		setState(state);
 		setStage(stageModel);
@@ -57,7 +57,7 @@
 		return state;
 	}
 	
-	public StageModel getStage() {
+	public String getStage() {
 		return stage;
 	}
 
@@ -99,7 +99,7 @@
 		this.state = state;
 	}
 	
-	public void setStage(StageModel stage) {
+	public void setStage(String stage) {
 		this.stage = stage;
 	}