Bug or fault in script?

[CJGrove]

I'm using this script but it add an helmet to my player when it's on a NRG but it doesn't remove it but its output is: Helm removed.

function addHelmetOnEnter ( vehicle, seat, jacked ) 
   if ( getVehicleID ( vehicle ) == 522 ) then 
    clothes = addPlayerClothes ( source, "moto", "moto", 16 ) 
  end 
end 
  
function removeHelmetOnExit ( vehicle, seat, jacked ) 
   if ( getVehicleID ( vehicle ) == 522 ) then 
    clothesremove = removePlayerClothes ( source, 16 ) 
    if ( clothesremove ) then 
    outputChatBox ( "Helm removed.", source, 0, 255, 0) 
    else 
    outputChatBox ( "Helm NOT removed.", source, 255, 0, 0) 
    end 
  end 
end 
  
addEventHandler ( "onPlayerVehicleExit", getRootElement(), removeHelmetOnExit ) 
addEventHandler ( "onPlayerVehicleEnter", getRootElement(), addHelmetOnEnter ) 

[CJGrove]

someone?