for num,tri in pairs(game.Workspace:GetChildren()) do
	if tri:IsA("Triangle") then do
	tri.BottomSurface = SmoothNoOutlines
	tri.TopSurface = SmoothNoOutlines
	tri.BackSurface = SmoothNoOutlines
	tri.FrontSurface = SmoothNoOutlines
	tri.LeftSurface = SmoothNoOutlines
	tri.RightSurface = SmoothNoOutlines
		end
	end
end

Its supposed to make all the items that are named "Triangle" in workspace to those Surfaces but it doesn't work, sorry for loops are not my best, any help?