Could not see JSON tab in request and response window

Hi,

I have gone through the SoapUI forum: http://www.soapui.org/REST-Testing/work ... uests.html, found that the request and response windows contains Json tabs. But I could not find them in my Soap-UI tool.

Please let me know how can we make "Json tabs" visible?

PFA screenshot taken from the above forum for your reference.

Thanks,
Naresh