GetTouchingParts is not a valid member of Model?

So I made a script to shoot a fireball, and the parts I want to be touched I want to test to have the touched parts have the same fire ParticleEmitter thats on the fireball. I tried using :GetTouchingParts() and it says "GetTouchingParts is not a valid member of Model" when I try shooting the fireball on a test dummy. Don't judge me with my variables btw lol

local Comet = game.ReplicatedStorage.Comet
Comet.OnServerInvoke = function(player)
	
	print("working!")
	local char = player.Character
	local hum = char.Humanoid
	local magic = game.ReplicatedStorage.circle
	local cframe = char.Torso.CFrame*CFrame.new(0, 0, -5)
	local rootpart = char.Torso
	local Mouse = player:GetMouse()
	local torso = char.HumanoidRootPart
	char.Humanoid.AutoRotate = false
	game:GetService("Chat"):Chat(char.Head, "White-Ember Sphere!")
	--Cast animation--
	torso.CFrame = CFrame.new(torso.Position, Mouse.Hit.p*Vector3.new(1,0,1) + torso.Position*Vector3.new(0, 1, 0))
	torso.Anchored = true
	print("anim")
	local anim = script:WaitForChild("Anim")
	local animTrack = hum:LoadAnimation(anim)
	animTrack:Play()
	--Magic Circle (update decal with ring)--
	print("magic circle")
	local circle = magic:Clone()
	circle.Parent = game.Workspace
	circle.Name = "MagicCircle"
	circle.Anchored = true
	circle.CanCollide = false
	circle.CFrame = char.Torso.CFrame*CFrame.new(0,0,-2.5)
	for i = 1, 12 do
		circle.Size = circle.Size + Vector3.new(0.75,.75,0)
		
		wait()
	end
	--Fireball itself--
	local p = Instance.new("Part")
	p.Parent = game.Workspace.fireball
	p.CFrame = CFrame.new(rootpart.position)
    p.TopSurface = "Smooth" 
    p.BottomSurface = "Smooth" 
    p.Shape = Enum.PartType.Ball 
    p.Size = Vector3.new(2, 2, 2) 
    p.Transparency = 1
    p.CanCollide = false
    p.Material = "Neon"
    p.BrickColor = BrickColor.new("Neon green")
	
	--White Flames--
	local fire = Instance.new("ParticleEmitter")
    fire.Size = NumberSequence.new(2)
    fire.Transparency = NumberSequence.new(0.5)
    fire.LightEmission = 0.3
    fire.Rate = 2860
    fire.Parent = p
    fire.Acceleration = Vector3.new(0,0,0)
    fire.Lifetime = NumberRange.new(0.2)
    fire.Speed = NumberRange.new(1)
    fire.Rotation = NumberRange.new(-360,360)
    fire.RotSpeed = NumberRange.new(-360,360)
    fire.Texture = "http://www.roblox.com/asset/?id=296874871"
	--Add Sound--
	local woosh = Instance.new("Sound")
    woosh.SoundId = "rbxassetid://463598785"
    woosh.Volume = 10
    woosh.MaxDistance = 250000
    woosh.EmitterSize = 1
    woosh.Parent = p
    woosh.Playing = true
	--BodyVelocity--
	local bv = Instance.new("BodyVelocity")
    bv.Parent = p 
    bv.Velocity = (Mouse.Hit.p - rootpart.Position).unit*100
	bv.P = 3000
	bv.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
	game:GetService("Debris"):AddItem(p, 7)
	--Damage Function--
	p.Touched:Connect(function(hit)
		if hit == circle then return end
		p:Destroy()
		local new = Instance.new("Part")
		new.Shape = "Ball"
		new.BrickColor = BrickColor.new("Deep orange")
		new.Anchored = true
		new.CanCollide = false
		new.Material = "Neon"
		new.Parent = game.Workspace.fireball
		new.Position = p.Position
		for i = 1, 50 do
			new.Size = new.Size + Vector3.new(.25,.25,.25)
			new.Transparency = new.Transparency + 0.03
			wait(0.05)
		end
		local pe = fire:Clone()
		local parts = hit.Parent:GetTouchingParts()
		for _, p in next, parts do
			pe.Parent = p
		end
	
		
	end)

     --Destroy circle--
wait(1.5)
circle:destroy()
char.Humanoid.AutoRotate = true
torso.Anchored = false
	end

GetTouchingParts can only be used as a function for BaseParts. If you do a for in pairs loop and use that function for every part then it should function correctly.