Vip/premium/normal stage

[xTremoxx]

Hi i need stage for vip/premiums/normal/ player, i'm using this script, but don't work :/, this script is correct? i'm using tfs 0.3.2

config = { 
    vipSystem = "YES",
    vipStorage = 54545
}
stages = {
    normal = {
        [1] = 11,
        [20] = 9,
        [60] = 7,
        [100] = 6,
        [280] = 7,
    },    
    premium = {
        [1] = 13,
        [20] = 10,
        [60] = 9,
        [100] = 7,
        [280] = 9,
    },
    vip = {
        [1] = 15,
        [20] = 13,
        [60] = 11,
        [100] = 10,
        [280] = 11,
    },
}
function onAdvance(cid, skill, oldlevel, newlevel)
    if isPremium(cid) then
        stage = stages.premium
    elseif getPlayerStorageValue(cid, config.vipStorage) > 0 and string.upper(config.vipSystem) == "YES" then
        stage = stages.vip
    else
        stage = stages.normal
    end
    
    if stage[newlevel] then
        setPlayerExtraExpRate(cid, stage[newlevel])
    end

end

vip use storage value.