In reply to cgales:
Thanks cgales!!
Steps worked really! and now configuration object is active also interface is set!. I tried to display them using uvm_info* macro and it is working!!
But the thing is that now it is not taking the values that i have put as a constraint in configuration object. e.g I have put a constraint to frequency mode and say that it must be in a standard mode. But it is not taking that. Even though configuration object is Active.
Any idea? Any suggestions?