diff --git a/app/controllers/olympiamanagements_controller.rb b/app/controllers/olympiamanagements_controller.rb
index 31dbb44..d7981fc 100644
--- a/app/controllers/olympiamanagements_controller.rb
+++ b/app/controllers/olympiamanagements_controller.rb
@@ -1,6 +1,7 @@
 class OlympiamanagementsController < ApplicationController
 	include ActionView::Context #vary important (only add this can access @@session from view)
-	before_action :set_sign_up_setting,:create_first_fields,:check_time
+	before_action :set_sign_up_setting,:create_first_fields
+	before_action :check_time , except=>[:index,:download_school_code]
 	prepend_view_path "app/templates" #for_render_pages
 	layout :get_layout  #for_render_pages
 	helper Admin::OlympiamanagementsHelper
diff --git a/app/views/olympiamanagements/_school_code.xlsx.axlsx b/app/views/olympiamanagements/_school_code.xlsx.axlsx
index 599ae0f..9deaf14 100644
--- a/app/views/olympiamanagements/_school_code.xlsx.axlsx
+++ b/app/views/olympiamanagements/_school_code.xlsx.axlsx
@@ -22,6 +22,6 @@ wb.add_worksheet(name: "school_class") do |sheet|
   #export data end
   sheet.add_row row , :style=> title,:widths => row.map{|cell| (cell.length* 11/ 2).round}
   export_data_rows.each do |infos_row|
-	sheet.add_row infos_row , :style=> column
+	sheet.add_row infos_row , :style=> column , :types => :string
   end
 end
\ No newline at end of file