Textbox sign is not filtering the text (msg)

[1000knives (Knives)]

I’d recommend using TextService. It would look something like this:

local TS = game:GetService(“TextService”)

local success, err = pcall(function()
    filtered = TS:FilterStringAsync(msg, player.UserId)
    filteredc = filtered:GetNonChatStringForBroadcastAsync()
end)

if success then
    script.Parent.SignPart.SurfaceGui.TextLabel.Text = filteredc
else
    print(err)
end

note that filtering only works in game, not studio