Help with esx_identity

-- Server script esx_identity
-- Getting information if player is on State 1 in VIP
function getVip(source, callback)
    local identifier = GetPlayerIdentifiers(source)[1]
    MySQL.Async.fetchAll('SELECT vip FROM `users` WHERE `identifier` = @identifier', {
        ['@identifier'] = identifier
    }, function(result)
            local data = {
                identifier  = result[1].identifier,
                vip         = result[1].vip
            }
            callback(data)
    end)
end

-- Restricting the Command so that VIP's only can use this
TriggerEvent('es:addCommand', 'register', function(source, args, user)
    if data.vip == 1 then
        getCharacters(source, function(data)
            if data.firstname3 ~= '' then
                TriggerClientEvent('chat:addMessage', source, { args = { '^[IDENTITY]', 'You can only have 3 registered characters. Use the ^3/chardel^0  command in order to delete existing characters.' } })
            else
                TriggerClientEvent('esx_identity:showRegisterIdentity', source, {})
            end
        end)
    else
        TriggerClientEvent('chat:addMessage', source, { args = { '^[DUSK CITY]', 'Du hast keine Berechtigung dies zu tun.'} })
    end
end, {help = "Register a new character"})