Helicopter Tween Not working

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#1

I’m trying to make my helicopter tween upwards towards a node but the tween does not work.
Everything is welded but the tween does nothing.

function followNodes(rootNode)
	local nodes = rootNode:GetChildren()
	local heliRoot = helicopterMain.PrimaryPart
	
	local fly = tween:Create(helicopterMain.PrimaryPart, TweenInfo.new(3), {CFrame = heliRoot.CFrame * nodes[1].CFrame})
	fly:Play()
end

The source code for the helicopter tween, help will be appreciated.

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#2

I wouldn’t really use welds, just anchor the entire model, and set a primary part.

The following code should work:

local tweenService = game:GetService("TweenService")
local info = TweenInfo.new()

local function tweenModel(model, CF)
	local CFrameValue = Instance.new("CFrameValue")
	CFrameValue.Value = model:GetPrimaryPartCFrame()

	CFrameValue:GetPropertyChangedSignal("Value"):connect(function()
		model:SetPrimaryPartCFrame(CFrameValue.Value)
	end)
	
	local tween = tweenService:Create(CFrameValue, info, {Value = CF})
	tween:Play()
	
	tween.Completed:connect(function()
		CFrameValue:Destroy()
	end)
end
(Not mine I have no idea who originally come up with this, but I use it a LOT)
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