fix error

app/helpers/admin/asks_helper.rb

@@ -212,9 +212,9 @@ module Admin::AsksHelper
     if !object.nil?
       value = object.custom_values[k]
       if value.nil?
-        if k.start_with("default@")
+        if k.start_with?("default@")
           value = object.custom_values[k.sub(/.*@/,'')]
-        elsif k.start_with("custom@")
+        elsif k.start_with?("custom@")
           category_id, k = k.scan(/custom@((?:(?!@).)*)@\w+/)[0][0]
           if category_id==object.category_id.to_s
             value = object.custom_values[k]