[feature] update the way to get scid

src/smf_app/smf_procedure.cpp

@@ -1136,7 +1136,11 @@ void session_update_sm_context_procedure::handle_itti_msg(
       // set UpCnxState to ACTIVATED
       sps->set_upCnx_state(upCnx_state_e::UPCNX_STATE_ACTIVATED);
       // Trigger Event_exposure event
-      scid_t scid = sc.get()->get_scid();
+      std::string str_scid = n11_trigger.get()->scid; 
+      //TODO: validate the str_scid
+      //                      
+      
+      scid_t scid = (scid_t) std::stoul (str_scid,nullptr,0);
       sc.get()->trigger_ue_ip_change(scid, 1);
       sc.get()->trigger_plmn_change(scid, 1);
       sc.get()->trigger_ddds(scid, 1);