# We cannot advance time until all outports have signals # BTW, this NAC is not really necessary, because our schedule already will only try to match 'advance_time' when no other actions are enabled :GlobalCondition { condition = ``` missing_signals = False for _, outport in get_all_instances("OutPort"): if len(get_outgoing(outport, 'hasSignal')) == 0: missing_signals = True break missing_signals ```; }