[HELP] Object loader - clone vehicles while connecting clients

[KeyWest]

Hi guys !
Need an help .
i used this resourse for spawning vehicles :

[Release] Object Loader (loads map .xml files)

ObjectLoader This is a resource for FiveReborn that loads object files from Map Editor (and some “Spooner” format) on clients. It also comes with a teleport handler (use /mtp in the chat to view teleports) and has some API calls. Some example maps are included in the [examples] folder. To use, start the object-loader resource, an object resource (like stunt-chiliad) and optionally the object-teleports resource. Screenshot [screenshot]

And i got little problem , clone vehicles while client connecting . Any ideas how to make spawn vehicles only once , like only first connected client loads this vehicles ? and another question , how i understood , here is an trigger zone :

local function isNearObject(p1, obj)
local diff = obj.pos - p1
local dist = (diff.x * diff.x) + (diff.y * diff.y)

return (dist < (distance * distance))

end

For distance 300 .

How can i make , if dist > (distance * distance) , delete vehicles ? (if player not in zone delete vehicles)
I never code before , and what i tryed , doesnt work :

Thanks !