help car speed, handling

[sel3a]

hello,

guys i made this script but there is a problem

WARNING: [sD]\SDcarspeed\server.lua40: Bad argument @ 'addeventHandler' [Expected function at argument 3, got nil]

it's really confusing me!

Please help

  
-- FBI Truck -- (272km/h) 
function handlingChange36 (theVehicle36, seat) 
    if getElementModel(theVehicle36) == 528 and seat == 0 then 
        setVehicleHandling(theVehicle36, "mass", 1600) 
        setVehicleHandling(theVehicle36, "turnMass", 4500) 
        setVehicleHandling(theVehicle36, "tractionMultiplier", 0.75) 
        setVehicleHandling(theVehicle36, "brakeDeceleration", 10) 
        setVehicleHandling(theVehicle36, "brakeBias", 0.53) 
        setVehicleHandling(theVehicle36, "tracionBias", 0.5) 
        setVehicleHandling(theVehicle36, "suspensionForceLevel", 1) 
        setVehicleHandling(theVehicle36, "suspensionDamping", 0.12) 
        setVehicleHandling(theVehicle36, "maxVelocity", 300) 
        setVehicleHandling(theVehicle36, "engineAcceleration", 20) 
        setVehicleHandling(theVehicle36, "suspensionLowerLimit", -0.1) 
        setVehicleHandling(theVehicle36, "driveType", "awd") 
        setVehicleHandling(theVehicle36, "modelFlags", 0x0) 
        setVehicleHandling(theVehicle36, "handlingFlags", 0x1408203) 
        setVehicleHandling(theVehicle36, "collisionDamageMultiplier", 0) 
    end 
end 
addEventHandler ( "onPlayerVehicleEnter", getRootElement(), handlingChange36 ) 
  
  
  
-- Bloodring Banger -- (380km/h) 
function handlingChange22 (theVehicle6, seat) 
    if getElementModel(theVehicle60) == 504 and seat == 0 then 
        setVehicleHandling(theVehicle60, "maxVelocity", 410) 
        setVehicleHandling(theVehicle60, "engineAcceleration", 40) 
        setVehicleHandling(theVehicle60, "tractionBias", 0.75) 
        setVehicleHandling(theVehicle60, "suspensionLowerLimit", -0.08) 
        setVehicleHandling(theVehicle60, "driveType", "awd") 
        setVehicleHandling(theVehicle60, "modelFlags", 0x312000) 
         setVehicleHandling(theVehicle60, "handlingFlags", 0x5C08400) 
    end 
end 
addEventHandler ( "onPlayerVehicleEnter", getRootElement(), handlingChange60 ) 

[abu5lf]

  
-- FBI Truck -- (272km/h) 
function handlingChange36 (theVehicle36, seat) 
    if getElementModel(theVehicle36) == 528 and seat == 0 then 
        setVehicleHandling(theVehicle36, "mass", 1600) 
        setVehicleHandling(theVehicle36, "turnMass", 4500) 
        setVehicleHandling(theVehicle36, "tractionMultiplier", 0.75) 
        setVehicleHandling(theVehicle36, "brakeDeceleration", 10) 
        setVehicleHandling(theVehicle36, "brakeBias", 0.53) 
        setVehicleHandling(theVehicle36, "tracionBias", 0.5) 
        setVehicleHandling(theVehicle36, "suspensionForceLevel", 1) 
        setVehicleHandling(theVehicle36, "suspensionDamping", 0.12) 
        setVehicleHandling(theVehicle36, "maxVelocity", 300) 
        setVehicleHandling(theVehicle36, "engineAcceleration", 20) 
        setVehicleHandling(theVehicle36, "suspensionLowerLimit", -0.1) 
        setVehicleHandling(theVehicle36, "driveType", "awd") 
        setVehicleHandling(theVehicle36, "modelFlags", 0x0) 
        setVehicleHandling(theVehicle36, "handlingFlags", 0x1408203) 
        setVehicleHandling(theVehicle36, "collisionDamageMultiplier", 0) 
    end 
end 
addEventHandler ( "onPlayerVehicleEnter", getRootElement(), handlingChange36 ) 
  
  
  
-- Bloodring Banger -- (380km/h) 
function handlingChange22 (theVehicle60, seat) 
    if getElementModel(theVehicle60) == 504 and seat == 0 then 
        setVehicleHandling(theVehicle60, "maxVelocity", 410) 
        setVehicleHandling(theVehicle60, "engineAcceleration", 40) 
        setVehicleHandling(theVehicle60, "tractionBias", 0.75) 
        setVehicleHandling(theVehicle60, "suspensionLowerLimit", -0.08) 
        setVehicleHandling(theVehicle60, "driveType", "awd") 
        setVehicleHandling(theVehicle60, "modelFlags", 0x312000) 
         setVehicleHandling(theVehicle60, "handlingFlags", 0x5C08400) 
    end 
end 
addEventHandler ( "onPlayerVehicleEnter", getRootElement(), handlingChange22 ) 

[sel3a]

Thanks mate epic fail :3