diff --git a/python_solution.py b/python_solution.py
index 2c14cc2..add4825 100644
--- a/python_solution.py
+++ b/python_solution.py
@@ -5,8 +5,33 @@ def refine_parameters(data: dict):
     Returns:
         Return a dictionary of cleaned input
     '''
-    clean_dict = {}
+    clean_dict = data   # Copy
 
     # Write your code here.
+    for key in clean_dict:
+
+        entry = clean_dict[key]
+
+        # If item is string
+        if type(entry) == str:
+            if entry.isdigit():
+                clean_dict[key] = int(entry)
+            # Boolean
+            elif entry == "true":   
+                clean_dict[key] = True
+            elif entry == "false":
+                clean_dict[key] = False
+        
+        # If item is list
+        elif type(entry) == list:
+            if type(entry[0]) == str and entry[0].isdigit():
+                # Convert strings to numbers in list
+                for i, item in enumerate(entry):
+                    clean_dict[key][i] = int(clean_dict[key][i])
+
+        # If item is dict
+        elif type(entry) == dict:
+            refine_parameters(entry)
+        
 
     return clean_dict