Survey Stats in Dashboard

[franklinfarias]

Hi guys,
I created package to display Survey Stats (equals Survey Stats in Survey) in Dashboard.
But the bars of graph not is displayed in Dashboard. I believe that be CSS configuration.
Example:

SurveyStats.png

Something idea?
The package is attach.
Package Description:
- Create the configuration DashboardTicketSurveyOverview;
- Create the file Kernel/Output/HTML/DashboardTicketSurveyOverview.pm
- Create the file Kernel/Output/HTML/Standard/AgentDashboardTicketSurveyOverview.dtl
- Create the file Kernel/Config/Files/SurveyDashboard.xml

Thanks!