Fix Hydrojet/Airjet_V01 filter command

custom_components/bestway/bestway/api.py

@@ -309,7 +309,7 @@ async def hydrojet_spa_set_filter(self, device_id: str, filtering: bool) -> None
             raise BestwayException(f"Device '{device_id}' is not recognised")
 
         _LOGGER.debug("Setting filter mode to %s", "ON" if filtering else "OFF")
-        await self._do_control_post(device_id, filter_power=1 if filtering else 0)
+        await self._do_control_post(device_id, filter=1 if filtering else 0)
         cached_state.timestamp = int(time())
         cached_state.attrs["filter"] = filtering
         if filtering: