Raycast isn't working properly, I assume i'm using Raycasting incorrectly?

I'm attempting to make a rubble effect using raycasting. It does not work and i'm not sure if they raycast even happens. EDIT: The raycast does happen, but it doesnt hit anything. Which it should because it summons in a part when i test it.

local tweenservice = game:GetService("TweenService")

local rayParrams = RaycastParams.new()
rayParrams.FilterDescendantsInstances = {nil}
rayParrams.FilterType = Enum.RaycastFilterType.Blacklist

for i, v in pairs(script.Parent.Rubble:GetChildren()) do
	local ray = workspace:Raycast(v.CFrame.p, v.CFrame.UpVector, rayParrams)
	if ray then
		v.Orientation = Vector3.new(math.random(-180,180),math.random(-180,180),math.random(-180,180))
		v.Material = ray.Instance.Material
		v.BrickColor = ray.Instance.BrickColor
		local tween = tweenservice:Create(v, TweenInfo.new(1,Enum.EasingStyle.Linear), {CFrame = v.CFrame + CFrame.new(0,v.Size,0)}):Play()
		wait(2)
		local tween = tweenservice:Create(v, TweenInfo.new(1,Enum.EasingStyle.Linear), {CFrame = v.CFrame - CFrame.new(0,v.Size,0)}):Play()
	end
end
wait(5)
script.Parent:Destroy()