code: def retrieve_value(self, name, default_value=None):
          
          value = self.spine.send_query("retrieveSetting", self.group, name, processes=["kervi-main"])
          if value is None:
              return default_value
          elif isinstance(value, list) and len(value) == 0:
              return default_value
          elif isinstance(default_value, int):
              return int(value)
          elif isinstance(default_value, float):
              return float(value)
          else:
              return value
docs: Retrieve a value from DB