diff --git a/app/controllers/hacks_controller.rb b/app/controllers/hacks_controller.rb
index f93b2dab5..3dddf6100 100644
--- a/app/controllers/hacks_controller.rb
+++ b/app/controllers/hacks_controller.rb
@@ -188,6 +188,7 @@ class HacksController < ApplicationController
   def param_update_sets sets, all_sets_id
     delete_set_ids = all_sets_id - sets.map{|set|set[:id]}
     @hack.hack_sets.where(id: delete_set_ids).destroy_all
+    logger.info("#######sets:#{sets}")
     sets.each do |set|
       if all_sets_id.include?(set[:id])
         update_attrs = {input: set[:input], output: set[:output], position: set[:position]}