diff --git a/Day-12/test.py b/Day-12/test.py
new file mode 100644
index 00000000..92c5c178
--- /dev/null
+++ b/Day-12/test.py
@@ -0,0 +1,13 @@
+def Update_Server_ConfigFile(file_path, key, value):
+    with open(file_path, "r") as file:
+        lines = file.readlines()
+
+    with open(file_path,"w") as file:
+        for line in lines:
+            if key in line:
+                file.write(key + "=" + value + "\n")
+            else:
+                file.write(line)
+
+Update_Server_ConfigFile("server.conf","MAX_CONNECTIONS", "1000")
+
diff --git a/README.md b/README.md
index f32309c8..1119aa56 100644
--- a/README.md
+++ b/README.md
@@ -57,8 +57,7 @@
   - Example: Automating a log file analysis with a loop to find errors.
 
 ## Day 10: Working with Lists (Part 2)
-- List comprehensions.
-- Nested lists and advanced list operations.
+- Advanced list operations.
 - Practice exercises and examples:
   - Example: Print list of files in the list of folders provided
 
@@ -79,7 +78,7 @@
 - AWS automation with Boto3.
 - Managing EC2 instances, S3 buckets, and more.
 - Practice exercises and examples:
-  - Example: Creating a aws script for deploying applications to remote servers.
+  - Example: Creating a python script using boto3 to implement serverless functions.
 
 ## Day 14: Github-JIRA intergration Project - (Project-4)
 - Introduction to RESTful APIs.