Question about Working Flatbed script

[Jeantony]

Hello,
I have a question about the Working Flatbed script from ImNotMentaL : I've seen some videos were the players were able to hook a car to the flatbed without getting out of the car. However, I can"t do this in my game, when I place the green circle on the car, nothing happens, I have to go in the car I want to hook and then press the key to hook it.

How can I do to be able to hook a car without getting out of the truck ?

Thanks for your answers