code: def reverse_reward_after_threshold(
      chosen_action, context, slot, reward, iteration, threshold
  ):
      if iteration > threshold:
          reward = [i[::-1] for i in reward]
      return reward[slot - 1][chosen_action - 1]
  
label_desc: Use image node_id 2 for calling a global function with example usage: reverse_reward_after_threshold(chosen_action, context, slot, reward, iteration, threshold) and returns: reward