local NPC_ID = 44007
local multi = 2

function Gambler_Gossip(event, plr, unit)
        plr:GossipMenuAddItem(6, "You ready to gamble, "..plr:GetName().."?", 0, 1, true, "Insert amount of gold you want to gamble with!")
        plr:GossipMenuAddItem(0, "Nevermind", 0, 2)
        plr:GossipSendMenu(1, unit)
end

function Gambler_Event(event, plr, unit, sender, intid, code)
        local chance = math.random(1,2) -- This'll give you a 50% chance to win. 1/2 = 50%  1/3 = 33%  1/4 = 25%  1/5 = 20%
        if(intid == 1) then
                if (tonumber(code)) then -- Check if player actually specified an amount in numbers
                        if(plr:GetCoinage() < tonumber(code*10000)) then
                                plr:SendBroadcastMessage("|cFFFFFF9F"..unit:GetName().." says: You do not have "..tonumber(code).." gold!")
                        else
                                if(chance == 1) then
                                        plr:SendBroadcastMessage("|cFFFFFF9F"..unit:GetName().." says: Congratulations! You won "..math.ceil(code*multi).." gold!")
                                        gold = (math.ceil(tonumber(code*10000)*multi))
                                        plr:GiveCoinage(gold)
                                else
                                        plr:SendBroadcastMessage("|cFFFFFF9F"..unit:GetName().." says: Too bad "..plr:GetName()..", better luck next time!")
                                        plr:RemoveCoinage(tonumber(code*10000))
                                end
                        end
                else
                        plr:SendBroadcastMessage("|cFFFFFF9F"..unit:GetName().." says: You need to use numbers, not letters.")
                end
        end
        plr:GossipComplete()
end

RegisterCreatureGossipEvent(NPC_ID, 1, Gambler_Gossip)
RegisterCreatureGossipEvent(NPC_ID, 2, Gambler_Event)