code: async def mod(self, iden, query):
          '''
          Change the query of an appointment
          '''
          appt = self.appts.get(iden)
          if appt is None:
              raise s_exc.NoSuchIden()
  
          if not query:
              raise ValueError('empty query')
  
          if self.enabled:
              self.core.getStormQuery(query)
  
          appt.query = query
          appt.enabled = True  # in case it was disabled for a bad query
  
          await self._storeAppt(apptync def mod(self, iden, query):
          '''
          Change the query of an appointment
          '''
          appt = self.appts.get(iden)
          if appt is None:
              raise s_exc.NoSuchIden()
  
          if not query:
              raise ValueError('empty query')
  
          if self.enabled:
              self.core.getStormQuery(query)
  
          appt.query = query
          appt.enabled = True  # in case it was disabled for a bad query
  
          await self._storeAppt(appt)
docs: Change the query of an appointment