Why doesn't this loop work? [Solved]

As far as I'm concerned, this should work:

for _,v in pairs(workspace.Model:GetChildren() do
	if v.Name~="Part21" then
		v.Size=v.Size+Vector3.new(17,0,-17)
		v.CFrame=CFrame.new(v.CFrame.p,
		v.Parent['Part'..tostring(tonumber(string.sub(v.Name,5))+1)].CFrame.p)
	end
end

• The Model is named Model, in the Workspace.
• The Model consists of Parts labeled in order as "Part1" to "Part21"

As far as I'm concerned, this should work.

On line 1, you need an extra ")" after the "()"

Correct:

for _,v in pairs(workspace.Model:GetChildren()) do