diff --git a/API_Reference/API_Reference.py b/API_Reference/API_Reference.py
index 8c6b52a..25bceb3 100644
--- a/API_Reference/API_Reference.py
+++ b/API_Reference/API_Reference.py
@@ -247,6 +247,8 @@ guan.plot_contour(x_array, y_array, matrix, xlabel='x', ylabel='y', title='', sh
 
 parameter_array = guan.preprocess_for_parallel_calculations(parameter_array_all, cpus=1, task_index=0)
 
+guan.change_directory_by_replacement(current_key_word='codes', new_key_word='data')
+
 guan.batch_reading_and_plotting(directory, xlabel='x', ylabel='y')