Position is not a valid member,what?

So I found this script that has global functions in it and I decided to try it out in the output but I got an error saying:

Position is not a valid member

20:44:29.329 - Script 'Workspace.PartTweening', Line 2 - field TweenPosition

20:44:29.329 - Script '_G.TweenPosition(Workspace.Part.Position,Workspace.Part1.CF', Line 1

20:44:29.330 - Stack End

Script with global tables:

_G.TweenPosition = function(part, goal, t)
	local start = part.Position
	local increment = wait() / t
	local x, y, z = part.CFrame:toEulerAnglesXYZ()
	for i = increment, 1, increment do
		wait()
		part.CFrame = (CFrame.new(goal,i) + start:Lerp(goal, i)) * CFrame.Angles(x, y, z)
	end
	part.CFrame = (CFrame.new() + goal) * CFrame.Angles(x, y, z)
end

_G.TweenAngles = function(part, goal, t)
	local start = Vector3.new(part.CFrame:toEulerAnglesXYZ())
	local increment = wait() / t
	for i = increment, 1, increment do
		wait()
		local lerped = start:Lerp(goal, i)
		part.CFrame = CFrame.new(part.Position) * CFrame.Angles(lerped.X, lerped.Y, lerped.Z)
	end
end

_G.TweenPositionAndAngles = function(part, goalP, goalA, t)
	local startP = part.Position
	local startA = Vector3.new(part.CFrame:toEulerAnglesXYZ())
	local increment = wait() / t
	for i = increment, 1, increment do
		wait()
		local lerped = startA:Lerp(goalA, i)
		part.CFrame = (CFrame.new() + startP:Lerp(goalP, i)) * CFrame.Angles(lerped.X, lerped.Y, lerped.Z)
	end
	part.CFrame = (CFrame.new() + goalP) * CFrame.Angles(goalA.X, goalA.Y, goalA.Z)
end
--Blockoo

What I put in the output:

_G.TweenPosition(Workspace.Part.Position,Workspace.Part1.CFrame,1)

How would I fix this error in the script it out in the output?