diff --git a/data_generation_interaction_ten_fold.py b/data_generation_interaction_ten_fold.py
index 1ad208a..f413ce9 100644
--- a/data_generation_interaction_ten_fold.py
+++ b/data_generation_interaction_ten_fold.py
@@ -73,7 +73,7 @@
     distance_matrix_threshold_I_N = np.float32(whole_distance_matrix_threshold_I) ## do not normalize adjcent matrix
     distance_matrix_threshold_I_N_crs = sparse.csr_matrix(distance_matrix_threshold_I_N)
     with open(current_path+'/seqfish_plus/whole_FOV_distance_I_N_crs_'+str(threshold), 'wb') as fp:
-        pickle.dump(distance_matrix_threshold_I_Ncrs, fp)
+        pickle.dump(distance_matrix_threshold_I_N_crs, fp)
 #
 # generate graph matrix where each cell only connect itself
 # import spektral