transformation script example

Dear Users,

Unfortunately I have not found any examples of transformation script in
manual. When I enter anything in Data Collection Item -> Transformation ->
Transformation Script and press "Test" button, nothing happens, so I suppose
that "Test" button doesn't work. What about transformation script itself, is
it implemented feature? If so, can anybody provide simple working example of
transformation function.

Thank you!

-- 
Best regards,
Edgar Chupit
callto://edgar.chupit