try this: 
function pedLoad ( name ) 
    local ped = createPed ( 120, 0, 0, 6) 
    if( ped ) then 
        local result = setPedOnFire( ped, true ) 
        if( result ) then 
            outputChatBox("good") 
        else 
            outputChatBox("bad2") 
        end 
    else 
        outputChatBox("bad1") 
    end 
end 
addEventHandler ( "oncientResourceStart", resourceRoot, pedLoad )