Discord MineSweeper Generator

local numbers = {":zero:",":one:",":two:",":three:",":four:",":five:",":six:",":seven:","eight:",":nine:"}
local x = 10
local y = 10
local mines = 13
local am = 0
local seed = 4
local notusedvalue = 0
local countup = 0
local offset = 3
local str = ""
for i=1,seed do
    notusedvalue = math.random(1,3)
end
-- we want to generate the field (and maybe insert mines?)
local field = {}
for i=1,x do
    table.insert(field,{})
    for ii=1,y do
        countup = countup + 1
        local tab = field[i]
        local ran = math.random(1,x*y)
        if ran <= mines + offset and am ~= mines then
            table.insert(tab,":bomb:")
            am = am + 1
        elseif ran > mines + offset and am ~= mines then
            local amount = x*y
            local current = countup
            local minesleft = mines-am
          --print(i,ii,current,amount,minesleft)
            if minesleft+current == amount then
                table.insert(tab,":bomb:")
                am = am + 1
            else
                table.insert(tab,"")
            end
        else
            table.insert(tab,"")
        end
    end
end


function getCord(x,y)
    local tab = field[x]
    return tab[y]
end

function addNumber(x,y)
    local tab = field[x]
    number = tab[y]
    if number == "" then
        tab[y] = ":one:"
    elseif number == ":one:" then
        tab[y] = ":two:"
    elseif number == ":two:" then
        tab[y] = ":three:"
    elseif number == ":three:" then
        tab[y] = ":four:"
    elseif number == "four" then
        tab[y] = ":five:"
    elseif number == ":five:" then
        tab[y] = ":six:"
    elseif number == ":six:" then
        tab[y] = ":seven:"
    elseif number == ":seven:" then
        tab[y] = ":eight:"
    elseif number == ":eight:" then
        tab[y] = ":nine:"
    end
end

for i,v in pairs(field) do
    for ii,vv in pairs(v) do
        local xx = i
        local yy = ii
        if vv == ":bomb:" then
            if xx-1 > 0 then
                if yy+1 <= y then
                    addNumber(xx-1,yy+1)
                end
                if yy-1 > 0 then
                    addNumber(xx-1,yy-1)
                end
                addNumber(xx-1,yy)
            end
            if xx+1 <= x then
                if yy+1 <= y then
                    addNumber(xx+1,yy+1)
                end
                if yy-1 > 0 then
                    addNumber(xx+1,yy-1)
                end
                addNumber(xx+1,yy)
            end
            if yy+1 <= y then
                addNumber(xx,yy+1)
            end
            if yy-1 > 0 then
                addNumber(xx,yy-1)
            end
        end
    end
end

for i,v in pairs(field) do
    if i ~= 1 then str = str.."\n" end
    for ii,vv in pairs(v) do
        if vv == "" then
            str = str.."||:zero:|| "
        else
            str = str.."||"..vv.."|| "
        end
    end
end
print(str)