diff --git a/app.py b/app.py
index 392cfd2..e4796ff 100644
--- a/app.py
+++ b/app.py
@@ -215,6 +215,7 @@ class ActivityState(db.Model):
     def clear_metadata(self):
         self.dict_metadata = {}
 
+
 def get_room(room_name):
     """Utility function to get room from room name."""
     room = Room.query.filter_by(name=room_name).first()
@@ -2331,7 +2332,9 @@ def handle_activity_response(room_name, user_response, username):
                     activity_state.add_metadata(random_key, random_value)
 
                 # Execute the processing script if it exists
-                if "processing_script" in step and transition.get("run_processing_script", False):
+                if "processing_script" in step and transition.get(
+                    "run_processing_script", False
+                ):
                     result = execute_processing_script(
                         activity_state.dict_metadata, step["processing_script"]
                     )
@@ -2349,7 +2352,11 @@ def handle_activity_response(room_name, user_response, username):
                         plot_image_html = f'<img alt="Plot Image" src="data:image/png;base64,{plot_image_base64}">'
 
                         if result.get("set_background", False):
-                            socketio.emit("set_background", {"image_data": plot_image_base64})
+                            socketio.emit(
+                                "set_background",
+                                {"image_data": plot_image_base64},
+                                room=room_name,
+                            )
                             socketio.sleep(0.1)
                         else:
                             # Save the plot image to the database
@@ -2373,7 +2380,10 @@ def handle_activity_response(room_name, user_response, username):
                             )
                             socketio.sleep(0.1)
 
-                if "metadata_clear" in transition and transition["metadata_clear"] == True:
+                if (
+                    "metadata_clear" in transition
+                    and transition["metadata_clear"] == True
+                ):
                     activity_state.clear_metadata()
 
                 print(activity_state.dict_metadata)
diff --git a/research/activity27-tic-tac-toe.yaml b/research/activity27-tic-tac-toe.yaml
index 4d1fcd9..00fab5c 100644
--- a/research/activity27-tic-tac-toe.yaml
+++ b/research/activity27-tic-tac-toe.yaml
@@ -11,13 +11,7 @@ sections:
             You will be playing against the AI. You are 'X' and the AI is 'O'.
             The board positions are numbered 0 to 8 as follows:
 
-            ```
-            0 | 1 | 2
-            ---------
-            3 | 4 | 5
-            ---------
-            6 | 7 | 8
-            ``` 
+            <img src="/static/images/tic-tac-toe.png">
 
       - step_id: "step_1"
         title: "Your Move"
@@ -119,6 +113,7 @@ sections:
 
               script_result = {
                   "plot_image": plot_board(board),
+                  "set_background": True,
                   "ai_move": ai_move,
                   "user_move": user_move,
                   "metadata": { 
diff --git a/static/images/tic-tac-toe.png b/static/images/tic-tac-toe.png
new file mode 100644
index 0000000..99eb080
Binary files /dev/null and b/static/images/tic-tac-toe.png differ