External weather station - mqtt - format number

please i face such a problem. Loading into openhab via mqtt data from external weather station. I have a problem with the number format. in the old version I was able to modify it via configuration, but in the latest version of openhab or find how to shorten the numbers to one decimal place.
I would like the wind value to two decimal places and the outside temperature to one decimal place.
Thank you. Mirek

Wind speed
2.16000536866 kph

Outside temperature
19.05654789 °C

Try to add a State Description in the item (will only impact visuals):



%.1f %unit%

1f is for once decimal here.

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