diff --git a/projects/challenge/smart_contracts/verify_medical_ai/contract.py b/projects/challenge/smart_contracts/verify_medical_ai/contract.py
index 17bd48c..f787864 100644
--- a/projects/challenge/smart_contracts/verify_medical_ai/contract.py
+++ b/projects/challenge/smart_contracts/verify_medical_ai/contract.py
@@ -11,7 +11,7 @@ class AiInfo(arc4.Struct):
 
 
 class VerifyMedicalAI(ARC4Contract):
-    def __init__(self) -> None:
+    def _init_(self) -> None:
         self.ai_info = LocalState(AiInfo)
 
     @arc4.baremethod(allow_actions=["OptIn"])
@@ -28,12 +28,12 @@ def opt_in(self) -> None:
     @arc4.abimethod()
     def record_ai_info(
         self,
-        name: str,
-        used_model: str,
-        medical_degree: str,
-        mcat_score: UInt64,
-        residency_training: bool,
-        medical_license: bool,
+        name: arc4.String,
+        used_model: arc4.String,
+        medical_degree: arc4.String,
+        mcat_score: arc4.UInt64,
+        residency_training: arc4.Bool,
+        medical_license: arc4.Bool,
     ) -> None:
         self.ai_info[Txn.sender] = AiInfo(
             name=name,