diff --git a/src/backend/Simulator.java b/src/backend/Simulator.java
index eb72230..29e07da 100644
--- a/src/backend/Simulator.java
+++ b/src/backend/Simulator.java
@@ -147,6 +147,18 @@ public class Simulator extends Thread {
 	 */
 	public void clickCell(int x, int y) {
 		//TODO : complete method
+		if (clickActionFlag) {
+			for (Agent agent : agents) {
+				if(agent.getX() == x && agent.getY() == y) {
+					agents.remove(agent);
+					return;
+				}
+			}
+			agents.add(new Sheep(x,y));
+		}
+		else {
+			field[y][x] = (field[y][x] == 0) ? 1 : 0;
+		}
 	}
 	
 	/**