In reply to tfitz:
Yes , I am doing get and set in agent and drv and mon.
As agent is instantatiated in another dummy comp., Is it somthing required there apart from this
uvm_config_db#(virtual apb_master_if)::set(this, “apb_master_agent”, “mst_if”, top_tb.u0_T_wrapper.u0_apb_master_if);
Again how this dummy component interface will be pointed by vmm env. virtual interface for same.?