Dynamic wallpaper

i have copied idea from another user about change background dynamically based on whater.
I’ve created a node red flow --> start every hour, take the weather status, create condition and set wallpaper path in a file wallpaper.yaml.

I’ve tried to read this file from single views, themes file and ui-lovelace.yaml and it works from somewhere; problem is that image is not displayed until i click update under three point on upper right side.
If it loads a background now, it remains for next days, until i click update.

Please help me to understand how make it dinamically without updating page manually;