How to get my custom chat to have a filter?

So basically I have 2 scripts, this script is what sends the chat to a folder.

chatstorage = game.Workspace.CStorage
local Chat = game:GetService("Chat")

game.Players.PlayerAdded:connect(function(plr)
    plr.Chatted:connect(function(msg)
        local stringval = Instance.new("StringValue", chatstorage)
        if msg ~= "" then
        local filteredText = ""
        local success, message = pcall(function()
            filteredText = Chat:FilterStringForBroadcast(msg, plr)
            end)
        if success then
        stringval.Name = plr.Name..": "..filteredText
        end
        end
    end)
    end)

And now the thing that puts the text on the gui, is this. Which won't really matter since this just uploads the texts

cb1`= script.Parent.cb1
cb2 = script.Parent.cb2
cb3 = script.Parent.cb3
cb4 = script.Parent.cb4
cb5 = script.Parent.cb5
cb6 = script.Parent.cb6

game.Workspace.CStorage.ChildAdded:connect(function(chatstuff)
    cb1.Text = cb2.Text
    cb2.Text = cb3.Text
    cb3.Text = cb4.Text
    cb4.Text = cb5.Text
    cb5.Text = cb6.Text
    cb6.Text = chatstuff.Name
    wait(0.1)
end)

If I don't filter the text, it works fine. But I want the text filtered because roblox has to be so picky about it. Please help me.