diff --git a/app/repositories/register_status.py b/app/repositories/register_status.py
index b4994f7..338fb24 100644
--- a/app/repositories/register_status.py
+++ b/app/repositories/register_status.py
@@ -12,4 +12,7 @@ class RegisterStatusRepository(BaseRepository[RegisterStatusModel]):
 
     async def get_last(self,project_id:uuid.UUID):
         last = await use_collection(TaskEnv.CLN_AUDIT_STATUS).find({"project_id":project_id}).sort('$natural', -1).to_list(1)
-        return last
+        if last:
+            return last[0]['number']
+        else:
+            return None