Im making a ice script for my friend and this one piece of code isnt working i really need help?

This is the part of the script thats really not working roblox studio just shows line 44 + line 101 line 44 is the "local function Ice()" and line 101 is all the way at the bottom where it says "for o = 1,50 do Ice() wait()"

local function Ice()
	local extra = math.random(-1.1,1.1)
	local Shard = game.ReplicatedStorage.IceShard:clone()
	local side = math.random(-sideval,sideval)
	up = Shard.Size.Y/2
	local rotate = math.random(0,180)
	local MRo = math.Random(99,100)
	if MRo == 99 then
	SRo = math.random(8/10)/10
	URo = MRo + SRo
	else
	SRo = math.random(1,3)/10
	URo = MRo + SRo
	end
	local lean = math.random(4,4)/10
	Shard.Size = Vector3.new(sizez,sizex,sizez)
	Shard.CFrame = char.HumanoidRootPart.CFrame * CFrame.new(side,-up,val + extra)
	Shard.Parent = folder
	Shard.CFrame = Shard.CFrame * CFrame.from.EulerAnglesXYZ(URo,rotate,0.4)
	~~~~~~~~~~~~~~~~~

This part really struggles me i really dont know why..	


	val = val - 2
	sizez = sizez + 1
	sizex = sizex + 1
	sideval = sideval + .5
	game.Debris:AddItem(Shard,3)
	
	
	local TweenService = game:GetService("TweenService")
	
	
	
	local TweenInform = TweenInfo.new(
		.2,
	    Enum.EasingStyle.Linear,
	    Enum.EasingDirection.Out,
	    0,
	    false,
        0.
        
	)
	
	
	
	local properties = {
		CFrame = Shard.Cframe * CFrame.new(0,up*1.5,0)
		
	}


    local Tween = TweenService:Create(Shard,TweenInform,properties)
    local Dmg = script.Dmg:clone()
    Dmg.Parent = Shard




end

	
	
	
for o = 1,50 do
	Ice()
	wait()
end	


end)