Update app.py

app.py

@@ -33,7 +33,7 @@ evaluation_instruction = (f"Here's a question: {question_string}. "
                             
 # TextLoss is a natural-language specified loss function that describes 
 # how we want to evaluate the reasoning.
-loss_fn = tg.TextLoss(evaluation_instruction)
+loss_fn = tg.TextLoss(eval_system_prompt = evaluation_instruction)
 
 # Step 3: Do the loss computation, backward pass, and update the punchline. 
 # Exact same syntax as PyTorch!