getValueSize(values_arr, size[,ind])

function getValueSize(values_arr, size, ind)
    local order = {}

    for _, k in pairs(values_arr) do
        if type(k) == "number" then
            table.insert(order, k)
        end
    end

    if size == "higher" then
        table.sort(order, function(a, b) return a > b end)
    elseif size == "lower" then
        table.sort(order, function(a, b) return a < b end)
    end

    i = 1
    if (ind) and (type(ind) == "number") then
        i = ind
    end

    return order[i]
end