diff --git a/app/views/admin/surveys/export.xlsx.axlsx b/app/views/admin/surveys/export.xlsx.axlsx
index 814ccb4..f6b11d3 100644
--- a/app/views/admin/surveys/export.xlsx.axlsx
+++ b/app/views/admin/surveys/export.xlsx.axlsx
@@ -1,7 +1,7 @@
 # encoding: utf-8
 
 wb = xlsx_package.workbook
-wb.add_worksheet(name: @survey.title) do |sheet|
+wb.add_worksheet(name: @survey.title[0..15]) do |sheet|
 
   row = []
   @survey_questions.each_with_index do |question, i|
diff --git a/app/views/surveys/result.html.erb b/app/views/surveys/result.html.erb
index a25bdb4..9efe5c4 100644
--- a/app/views/surveys/result.html.erb
+++ b/app/views/surveys/result.html.erb
@@ -25,9 +25,9 @@
                 <div id="question_chart_<%= question.id.to_s %>" style="width: 600px; height: 300px;"></div>
               </li>
             <% when SurveyQuestion::Radiogroup %>
-              <% question.survey_question_options.each do |option| %>
+              <% question.survey_question_options.each_with_index do |option,index| %>
                 <li>
-                  <div id="question_chart_<%= question.id.to_s %>_<%= option.id.to_s %>" style="width: 600px; height: 300px;"></div>
+                  <div id="question_chart_<%= question.id.to_s %>_<%= index.to_s %>" style="width: 600px; height: 300px;"></div>
                 </li>
               <% end %>
             <% end %>
@@ -57,15 +57,17 @@
           chart_<%= qid %>.draw(data_<%= qid %>, {title: '<%= question.title %>'});
         <% when ::SurveyQuestion::Radiogroup %>
           <% options = Hash[question.survey_question_options.collect{|o| [ o.id.to_s, o.name ] }] %>
+          <% i = 0 %>
           <% @chart_data[qid].each do |option, groups| %>
-            var data_<%= qid %>_<%= option %> = google.visualization.arrayToDataTable([
+            var data_<%= qid %> = google.visualization.arrayToDataTable([
               ['<%= t("survey_question.option") %>', ''],
               <% groups.each do |group, count| %>
                 ['<%= group %>', <%= count %>],
               <% end %>
             ]);
-            var chart_<%= qid %>_<%= option %> = new google.visualization.PieChart(document.getElementById('question_chart_<%= qid %>_<%= option %>'));
-          chart_<%= qid %>_<%= option %>.draw(data_<%= qid %>_<%= option %>, {title: '<%= question.title %> - <%= options[option] %>'});
+            var chart_xx = new google.visualization.PieChart(document.getElementById('question_chart_<%= qid %>_<%= i.to_s %>'));
+          chart_xx.draw(data_<%= qid %>, {title: '<%= question.title %> - <%= options[option] %>'});
+            <% i = i + 1 %>
           <% end %>
         <% end %>
       <% end %>