Can someone help with this model "tween" script?

I made a tweening script, but its not working. It throws no errors yet does nothing. and dosnt print this stuff. Help?

function TweenCFrame(Model,newCFrame,step,UwantDelay) 
	tweeningfunction = function ()
		TheCF = Model:GetModelCFrame()
		local OldP = TheCF.p 
		local oldAngle = Vector3.new(TheCF:toEulerAnglesXYZ()) 
		local NewP = newCFrame.p 
		local newAngle = Vector3.new(newCFrame:toEulerAnglesXYZ()) 
		print("OldP = "..OldP)
		print("oldangle = "..oldAngle)
		print("NewP =  "..NewP)
		print("NewAngle = "..oldAngle)
		print("NewAngle = "..newAngle)
		local Repeater = coroutine.create(function() 
			for i = 0, 1, step do 
				Model:MoveTo(((OldP*(1-i))+(NewP*i))*CFrame.fromEulerAnglesXYZ((oldAngle.x*(1-i))+(newAngle.x*i),(oldAngle.y*(1-i))+(newAngle.y*i),(oldAngle.z*(1-i))+(newAngle.z*i)))
				wait() 
			end 
			TheCF = newCFrame 
		end) 
		coroutine.resume(Repeater) 
	end
	if UwantDelay == true then
		delay(0,tweeningfunction)
	else
		pcall(tweeningfunction)
	end
end

Thanks.