Turn off something and after turn it on again if it was on, based on sensor value

Configuration
1

Hi community! First time here, but using HA since 2018. Never did more complex automations, so I need your help to achieve something.
My goal is turn off a vehicle charger (if it was turned on) if energy current consumed by my entire house exceeds 50A. And turn it on again when the energy current drops below 10A.
I would know how to do this automation, if I didn’t need to know if the charger was already on before the automation runs.
Do I need a variable to hold a true/false value, so I know if the charger was on or off in the time the automation was triggered? How can I do that?
I appreciate any help.
Thanks!

2

When the automation triggers create a scene to save the state of the charger before you turn it off. Then restore the scene when the energy current drops below 10A.