finally managed toggle

app.py

@@ -99,6 +99,7 @@ with gr.Blocks(theme = theme) as user_eval:
             selection = gr.HTML("""
             <h2> Retrieved Passage </h2>
             <p> """ + passage_texts[0] + "</p>")
+            forward_btn = gr.Button("Next question", visible = False)
             line = gr.Markdown("---")
             # New answers is able to render the Q and A with formatting. It doesn't change the contents of the answers.
             new_answers = answers_text.copy()
@@ -114,7 +115,7 @@ with gr.Blocks(theme = theme) as user_eval:
             + """ + new_answers[2] + 
             """ \n
             + """ + new_answers[3])
-            forward_btn = gr.Button("Next question", visible = False)
+            
 
         # Scoring box
         with gr.Column(scale = 1) as scores_p: