Weather (ECMWF) widget shows 0 instead of a dash "-" when there's no data (Band 9 Pro)

[cristianheras]

Hi, thanks for this great tool!

I'm building a custom watchface for the Xiaomi Band 9 Pro, paired through the "Notify for Xiaomi" app, using the weather data source (ECMWF provider).

I noticed that on the stock/default watchfaces, when there's no weather data available (e.g. phone disconnected), the value is shown as a dash "-" instead of a number. On my custom watchface, in that same situation it shows "0", which looks like it's just falling back to the first image/index in the data source instead of an actual "no data" state.

Is there a way to configure a widget/data source so that it displays a dash (or stays blank) when there's no data, the same way the stock faces do, instead of defaulting to 0?

Thanks in advance!