Why does this keymove not want to function correctly as the script says?

Hello everyone, I made a key move and I got all the right things added in the whole script, now this is just a part of the script that doesn't seem to work properly.

When this key is pressed, a whole circle like mesh should keep on growing in size, when I try it in studio it just begins with a little circle and then freezes and doesn't function right.

What is the problem here?

function Zmove()
	print("Finding Operoom")
	if char.Torso:FindFirstChild("OpeRoom") == nil then
	print("Not Found")
	game:GetService("Chat"):Chat(char, "Ope Ope no mi: Room")
	print("Chatted")
	local room = Instance.new("Part", char.Torso)
	room.BrickColor = BrickColor.new("Bright bluish green")
	room.Material = "SmoothPlastic"
	room.Reflectance = 0.7
	room.Transparency = 0.6
	room.Name = "OpeRoom"
	room.Anchored = true
	room.CanCollide = false
	room.Elasticity = 0
	room.Friction = 1
	room.Shape = "Ball"
	room.Size = Vector3.new(1,1,1)
	room.TopSurface = 0
	room.BottomSurface = 0
	room.CFrame = char["Right Arm"].CFrame+Vector3.new(0,-1,0)
	for i = 1, 3 do
		room.Size = room.Size+Vector3.new(10*holdtime,10*holdtime,10*holdtime)
		room.CFrame = char["Right Arm"].CFrame+Vector3.new(0,-1,0)
		run.Stepped:wait()
	end
	local opelight = Instance.new("PointLight")
	opelight.Range = room.Size.Y/2
	opelight.Name = "OpeLight"
	opelight.Parent = room
	area = room.Size.Y
	half1 = Vector3.new(-room.Size.X/2,-room.Size.Y/2,-room.Size.Z/2)
	half2 = Vector3.new(room.Size.X/2,room.Size.Y/2,room.Size.Z/2)
	operoomcframe = room.CFrame
	else
		print("Found")
		game:GetService("Chat"):Chat(char, "Ope Ope no mi: Room Collapse")
		for i = 1, char.Torso.OpeRoom.Size.Y-1 do
			if char.Torso:FindFirstChild("OpeRoom") == nil then debounce = false return end
			char.Torso.OpeRoom.Size = char.Torso.OpeRoom.Size+Vector3.new(-1,-1,-1)
			char.Torso.OpeRoom.CFrame = operoomcframe
			char.Torso.OpeRoom.OpeLight.Range = char.Torso.OpeRoom.Size.Y/2
			run.Stepped:wait()
		end
		area = 0
		half1 = 0
		half2 = 0
		operoomcframe = 0
		char.Torso.OpeRoom:Destroy()
	end
	debounce = false
end