Having a few slight issues with progressive increase with a tween

Help and Feedback Scripting Support
#1

Currently I want to update the experience bar I have every time that the exp increases. The issue with this is that I cannot seem to increase it the way that tweening works for it to be progressive and I’m wondering if a switch to lerp would be better.

task.wait(1)

-- \\ Player-Related Variables // --

local Player = game.Players.LocalPlayer
local Stuff = Player:WaitForChild("YourInnerSelf")
local QI = Stuff:WaitForChild("QigongEXP")
local QiReq = Stuff:WaitForChild("QiLevelNeeded")

-- \\ GUI-Related Variables // --

local ProBar = script.Parent.ProgressionBar.ActualMovingBar

-- \\ Functions // --

QI.Changed:Connect(function()
	if QI.Value == QiReq.Value then
		ProBar.Size = UDim2.new(16, 12)
	end
	
	if QI.Changed then
		ProBar:TweenSize(
		UDim2.new += UDim2.new(0,1.625, 0, 0),
			Enum.EasingDirection.In,
			Enum.EasingStyle.Linear,
			2,
			false,
			nil
			)
		
	end
end)

I would like to know the possible solution I could do to this.