Intenta esto:
panel = guiCreateWindow(473,188,281,381,"Nitro & Car panel by: ScorpVI",false)
close = guiCreateButton(203,348,67,24,"Close",false,panel)
N1 = guiCreateButton(13,39,86,37,"Nitro x2",false,panel)
N2 = guiCreateButton(13,141,86,37,"Nitro x10",false,panel)
N3 = guiCreateButton(14,90,86,37,"Nitro x5",false,panel)
Infernus = guiCreateButton(15,197,237,34,"Infernus",false,panel)
dumper = guiCreateButton(18,287,237,34,"Dumper",false,panel)
bullet = guiCreateButton(16,241,237,34,"Bullet",false,panel)
Imagen = guiCreateStaticImage(118,54,145,110,"images/mtalogo.png",false,panel)
guiSetVisible (panel, false )
--Esto lo mantuve aunque corregí un error con respecto al nombre.
function open ()
guiSetVisible(panel, true)
showCursor(true)
end
bindKey("F2", "down", open)
function Exit ()
guiSetVisible (panel, false )
showCursor ( false )
end
function infernu()
Jugador = getLocalPlayer ()
x,y,z = getElementPosition (Jugador)
createVehicle ( 411, x + 2, y, z + 10 )
end
function dumpe()
Jugador = getLocalPlayer ()
x,y,z = getElementPosition (Jugador)
createVehicle ( 406, x + 2, y, z + 10 )
end
function bulle()
Jugador = getLocalPlayer ()
x,y,z = getElementPosition (Jugador)
createVehicle ( 541, x + 2, y, z + 10 )
end
function Nitro1()
triggerServerEvent ( "onNitroo1", getLocalPlayer() )
end
function Nitro2()
triggerServerEvent ( "onNitroo2", getLocalPlayer() )
end
function Nitro3()
triggerServerEvent ( "onNitroo3", getLocalPlayer() )
end
addEventHandler ( "onClientGUIClick", close, Exit, false )
addEventHandler ( "onClientGUIClick", Infernus, infernu, false )
addEventHandler ( "onClientGUIClick", dumper, dumpe, false )
addEventHandler ( "onClientGUIClick", bullet, bulle, false )
addEventHandler ( "onClientGUIClick", N1, Nitro1, false )
addEventHandler ( "onClientGUIClick", N2, Nitro2, false )
addEventHandler ( "onClientGUIClick", N3, Nitro3, false )
Muchas gracias Alexs me ayudaste mucho , me funciono perfecto