Why isn't my trail getting destroyed?

This is my 5th attempt at destroying a trail when the gui button gets clicked. I used alot of different methods but I can't get it to work. Basically when a button is clicked a trail is inserted into the player but I got multiple buttons for different trails. So I want to remove the current trail(s) by clicking on another gui button. FilteringEnabled is on btw, If you could please give me a solution with and without FilteringEnabled.

local plr = game.Players.LocalPlayer

local char = plr.Character

script.Parent.MouseButton1Click:Connect(function()

for i,v in pairs (char:GetChildren()) do

if v:IsA("Trail") then

v:Destroy()

end

end

end)