Help with wall climbing script? [Edited][Unsolved]

The goal of this script is to detect a player jumping in the direction of a wall and allow them to climb it using bodyvelocity, but it does'nt work, and gives out no errors or messages. Code

local climb_speed = 9
local permit_wallhudding = true
local stick_distance = 3



function testPrime(p)
	local i = 2
	while i < p do
		if p % i == 0 then
			return false
end
i = i + 1
end
return true
end

local i = 0
local p = {2,3}

while i < #p do
	wait()
	i = i + 1	
	p[i+2] = i*i
end


function onD(h)
	if h.Name == "Torso" then
		follow(h)
end
end
game.Workspace.DescendantAdded:connect(onD)

function push(a)
	a.maxForce = Vector3.new(0,10^5,0)
end
function stop(a)
	a.maxForce = Vector3.new(0,0,0)
end

function castForward(p)
	local r = Ray.new(p.Position-Vector3.new(0,3.5,0),p.CFrame.lookVector*stick_distance)
	local k,t = workspace:FindPartOnRay(r,p.Parent)
	print(k,t)
	return k,t
end

function follow(t)
	wait(1)
	local h = t.Parent.Humanoid
	local v = Instance.new("BodyVelocity")
	v.velocity = Vector3.new(0,climb_speed,0)
	stop(v)
	v.Parent = t
	print("Got " .. tostring(t.Parent))
	while true do
		wait()
		if t.Parent == nil or t.Parent.Parent == nil then
			return
end
--Start Code
if h.Jump and castForward(t) ~= nil then
	push(v)
	print("ON")
else
	stop(v)
end

--End Code
end
end

Thanks(tabbed)

Call the functions to run?