Store a Value and use it for a calc

[Tuwat47]

Well you can create a virtual object and write value to it or use storage in script(see helpers).
Another solution to the task is to make a trend for your energy object and fetch value from it:
https://kb.logicmachine.net/libraries/trends/

Thanks Daniel. I need your help once again if you're available.

Using trends I can store data and this is ok. How can I call back the data for example at 31/10/2024 and use it in a calc?

Based on my task, I should be able to use the data stored a 31/10/24 at 23:59 inside the variable  "Electrical_Consumption_previous_month" and execute my calc. Are you agree with me? Can you suggest me how to do that?

Thanks