diff --git a/mre_lambda.py b/mre_lambda.py
index ad46902..9a99134 100644
--- a/mre_lambda.py
+++ b/mre_lambda.py
@@ -1,8 +1,14 @@
 import boto3
+from typing import Dict, Any
 from aws_lambda_typing.events import S3Event
 from aws_lambda_typing.context import Context
 from .mre import compute_mre
 
 
-def lambda_handler(event: S3Event, context: Context):
+def lambda_handler(event: S3Event, context: Context) -> Dict[str, Any]:
+    # get the arguments out of the S3Event object
+    home_value = event['home_value']
+    #consumer_income = event['consumer_income']
+    down_payment = event['down_payment']
+    consumer_fico = event['consumer_fico']
     return None