help with code

[Machine]

this work doesn't work why?

function enterPlane(theVehicle, seat, jacked) 
    if (getVehicleType(theVehicle) == "Plane" or "Helicopter") then 
        outputChatBox("Welcome onboard!", source) 
    end 
end 
  
addCommandHandler("test", enterPlane) 

i wanna when someone enter Plane or Helicopter and make command test a message appear for him!

[Machine]

so all any help?

[Kenix]

First argument in function-handler is player not vehicle. ( and this arguments: seat, jacked incorrect because seat is not seat it's commandName, jacked is argument when you type in command /test [argument] ). Forgot say, /test command is MTA command, so you need rename it. Also if you want get player's vehicle you need use

getPedOccupiedVehicle 

Also

outputChatBox("Welcome onboard!", source) 

source is not defined

and

if (getVehicleType(theVehicle) == "Plane" or "Helicopter") then 

Condition is wrong. Because condition will work with any vehicle type.

For example

function show( s ) 
    if s == '1' or '2' then 
        print 'y' 
    else 
        print 'n' 
    end 
end 
  
show '1' --> y 
show '5' --> y 

So it's correct:

  
local sVehicleType = getVehicleType( theVehicle ) 
if sVehicleType == "Plane" or sVehicleType == "Helicopter" then