Tween the size of a part expanding on one side only

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#1

Hi,

I am trying to tween the size of a part expanding on one side only but having issues, I think I need to use LookVector but the code below still expands on both sides?

Can anyone help?

local tween = ts:Construct(script.Parent, TweenInfo.new(Speed, Enum.EasingStyle.Quad, Enum.EasingDirection.Out, -1, true, 0), 
	{Size = script.Parent.Size + script.Parent.CFrame.LookVector * Vector3.new(0,0,5)}
	, .4, false)

Thanks

#2

If you want to grow only in a certain direction, you have to move the part in that direction at half the speed it’s growing on that axis:

     +---+
1.   |   |     start at width 5
     +---+

   +-------+
2. |       |   + 4 width (grows 2 in both directions)
   +-------+

     +-------+
3.   |       | move right 2 to realign left side
     +-------+

In other words, if you’re doing

Size = script.Parent.Size + Vector3.new(0, 0, 5)

You also need to do

CFrame = script.Parent.CFrame * Vector3.new(0, 0, 2.5)
Tween a parts size in one direction