function Get8RandomNumbers()
    local limit = 15
    local sum = 0
    local temp = {}
    for i = 1, 8 do
        local value = math.random(1, limit)
        sum = sum + value
        if i == 8 then
            value = 100 - sum
        end
        table.insert ( temp, value )
    end
    return temp
end

value = Get8RandomNumbers()