Fix bug.

app/views/admin/asks/do_export.xlsx.axlsx

@@ -29,7 +29,7 @@ wb.add_worksheet(name: "Ask Question") do |sheet|
       when 'ask_category_id'
         text = categories[ask_question.category_id].title rescue ''
       when 'sex'
-        text = ask_question.sex
+        sex = ask_question.sex
         if ['male','female'].include? sex.to_s
           text = I18n.t("mongoid.attributes.ask_question.#{sex}")
         else