Show state on/off of the button card

Configuration
1

I have 4 light bulbs in my bedroom.
I created the card name “Toggle Bedroom lights” that run script toggle all of my 4 lights and it work fine. but the problem is it doesn’t show the state of the lights.

I want to show the state on/off in that button card.
Is it possible?
any solution?

2

Use the light group.

3

thanks
I have more quesion.
Is it posible to group light and switch together and show the state on single button card?