Slider: Order of posts random?

Hi there,

at first: Thank you for this fine theme!

I’m asking myself if the slider topics can be made random, so each new call up of the website shows a different post defined for slider?

Best regards!

P.S.: Setted the flexslider.js option “randomize” on “true”, but it doesn’t work.

Any idea?

Installed plugins are

Contact Form 7
Custom Meta Widget
iThemes Security
WordPress Importer

Installed but inactive are

Meta Slider
Multiple Featured Images

Couldn’t find any bootstrap in the mentioned plugins.