Update app.py

app.py

@@ -126,8 +126,10 @@ def video_frame_callback(frame: av.VideoFrame) -> av.VideoFrame:
                    #              st.session_state["output_text"] = st.session_state["output_text"][:-1]  # Remove last character
                    #          else:
                    #              st.session_state["output_text"] += ' '  # Add space
-                   if distance<30:
+                   change="true"
+                   if change=="true":
                       text += "hi"
+                      change="false"
                        
 
     result_queue.put(detections)