OK, I have this working, but initially had an issue - I had the Primary Device set for my Efergy uploader, which does not upload temperature - in fact I’d deliberately mangled the Efergy key, so it should have had no readings at all in any field.
With the Primary Device set to Efergy (but key mangled), even after setting the OpenWeatherMap info the temperature field stayed stubbornly blank until after I changed the Primary Device to (none).
Now Primary Device appears to have been set by the system to ‘Weather’.
Which prompted me to look at the Secondary Device - which doesn’t have the Weather option, or some of the options that have been added to Primary Device over the years.
BB, any chance you could synchronise the selectable options for Primary Device into the Secondary Device drop-down menu at some stage? Then we could keep the Primary Device for whatever we’ve been using, and set Secondary Device to ‘Weather’, and have both systems operating.