[kaiks]

So i have this car rental system and an engine system and i want to mix those together, but my mind doesn't
go that far, because i'm beginner scripter.

At the moment when i go and sit in the rental car i can easily do /engine and drive away with the car, but what i want is that
you first have to rent a car, then you can do /engine and drive it.

Pictures:





And i also want the server to say i'm not in the car, when i'm onfoot and using /engine, at the moment it says
the same stuff like i'm in car and starting it.

I know it's hard to understand this problem, but please try understanding.
And also ask for the script if you can tell me what to add there.