How to set timerangepicker as realtime by default?

Hello,

I need set timerangepicker to appear like rt-30s by default in my dashboards. How do I do that? Can I?

I've tried:

<module name="TimeRangePicker" layoutPanel="panel_row1_col1" autoRun="True">
  <param name="default">real_time_last30s</param>

Where real_time_last30s is a stanza in my times.conf

Thank you in advance