diff --git a/src/backend/Simulator.java b/src/backend/Simulator.java
index eb72514..33b90d2 100644
--- a/src/backend/Simulator.java
+++ b/src/backend/Simulator.java
@@ -43,7 +43,8 @@ public class Simulator extends Thread {
 		fieldSurviveValues = new ArrayList<Integer>();
 
 		//TODO : add missing attribute initialization
-		
+		field = new int[LINE_NUM][COL_NUM]; // Initialize the field
+		//DONE
 		
 		
 		//Default rule : Survive always, birth never
@@ -412,6 +413,7 @@ public class Simulator extends Thread {
 			}
 		}
 	}
+	//DONE
 	
 	private Agent createAgent(String agentData) {
 		String[] parts = agentData.split(",");