Roblox Script Generated by ScripterAI

"create code for a global messages system that will use the roblox chat using textchatservice and pcall functions as well this will detect when the players leaderstats Emerald Value goes up by 250 to 3500 then send a global message with the players username and amount of emeralds they got"

```lua
-- server script 
local TextChatService = game:GetService("TextChatService")
local Players = game:GetService("Players")

local function onPlayerAdded(player)
    local leaderstats = player:FindFirstChild("leaderstats")
    local emeralds = leaderstats and leaderstats:FindFirstChild("Emerald")

if not emeralds then return end

emeralds:GetPropertyChangedSignal("Value"):Connect(function()
        if emeralds.Value >= 250 and emeralds.Value <= 3500 then
            local success, errorMessage = pcall(function()
                TextChatService:BroadcastMessage({
                    Text = player.Name .. " has now " .. tostring(emeralds.Value) .. " emeralds!",
                    Font = Enum.Font.SourceSansBold,
                    Color = Color3.new(0, 1, 0),
                    TextSize = Enum.TextSize.Size96
                })
            end)
            if not success then
                warn("Failed to send global message: " .. errorMessage)
            end
        end
    end)
end

Players.PlayerAdded:Connect(onPlayerAdded)
```