specman clock

Hi

i need to use specman clock for the simulation in standalone mode instead of DUT clock. I read about si_util_time_mgr in a cadence newsletter.

http://www.cadence.com/newsletters/incisiveplatform/incisive_q406.pdf?CMP=NLC-TD5628415825 

But it is not working. Is it possible to get a specman clock to handle the timing in the verification environment? Please help on this