code: def do_execute(self):
          
          if self.storagehandler is None:
              return "No storage handler available!"
          self.storagehandler.storage[self.resolve_option("storage_name")] = eval(str(self.resolve_option("value")))
          self._output.append(self.input)
          return None
docs: The actual execution of the actor.
  
          :return: None if successful, otherwise error message
          :rtype: str