simple clientside script not working

[Pierce]

function warnPlayersOfDamage(vehicle)
local pveh = getPedOccupiedVehicle (localPlayer)
local vhealth = getElementHealth(pveh)
  if vhealth < 260 then
     outputChatBox("Your vehicle is highly damaged. It may explode.",localPlayer,255,0,0)
  end
end
addEventHandler("onClientVehicleEnter",localPlayer,warnPlayersOfDamage)

im just doing this because im bored but this thing doesnt even react.no errors,nothing.

please help

[Baseplate]

function warnPlayersOfDamage(thePlayer, seat) 
local vhealth = getElementHealth(source) 
if vhealth < 260 then 
outputChatBox("Your vehicle is highly damaged. It may explode.", 255, 0, 0) 
end 
end 
addEventHandler("onClientVehicleEnter", root, warnPlayersOfDamage) 

The source of onClientVehicleEnter is the vehicle that the player entered.

[Pierce]

Thanks abxf

[Baseplate]

You're welcome.