update parameter in child devices

[martin7462 1]

I would like to ask you for a little help.

I will try to create QA with child devices. QA which will be monitor PV consumption converter and create CHILD devices.

It  will be monitoring FVE only 2 parameters (panel production and battery status). I created 2 child devices in QA, but I have no idea how to update parameters in childs. I can't even override in childs QA value, unit, log. I'm making a mistake somewhere

Where should I write the function and where should I initialize it and how to change parameters in childs devices.

Can you help me?

FVE.txt