fix num samples in validation

app.py

@@ -53,7 +53,7 @@ class GenerationRequest:
     private: bool = False
     num_retries: int = 0
 
-def validate_request(request: GenerationRequest):
+def validate_request(request: GenerationRequest) -> GenerationRequest:
     # checks that the request is valid
     # - input dataset exists and can be accessed with the provided token
     try:
@@ -99,6 +99,8 @@ def validate_request(request: GenerationRequest):
     # check valid email address TODO: use py3-validate-email https://stackoverflow.com/questions/8022530/how-to-check-for-valid-email-address
     if "@" not in request.email or "." not in request.email.split("@")[-1]:
         raise Exception("Invalid email address")
+    
+    return request
 
 
 def add_request_to_db(request: GenerationRequest):
@@ -248,7 +250,7 @@ def create_gradio_interface():
                 )
                 
                 # check the input dataset exists and can be accessed with the provided token
-                validate_request(request)
+                request = validate_request(request)
                 add_request_to_db(request)
 
                 return "Request submitted successfully!"