I’ve setup an ESP to read my Electricity meter and it returns the current kWh with 3 decimals like so: 0.845 (values between 0.001 and 2.000).
When I virtualWrite this to the Labeled Value widget it shows as it expected.
But when I use the same virtual pin for the History Graph nothing shows:
Sounds like you were on the wrong range setting… e.g. 1m when there is no data to show for the past month… or you have some really strange delays in your code