Tween service not working properly

Hello, I just coding my script to tween animation
But I recieved this error
Screenshot_10
I know what’s means just object don’t have property named Size
But I doing

for _,part in pairs(script.Parent.TweenParts:GetChildren(() do
-- Blah blah blah
end

There is my script and explorer

script.Parent.Parent.KeyCardChecker.Granted:GetPropertyChangedSignal("Value"):Connect(function()
	if script.Parent.Parent.KeyCardChecker.Granted.Value == true then
		script.Parent.Light.BrickColor = BrickColor.new("Bright green")
		local Info = TweenInfo.new(1,Enum.EasingStyle.Sine,Enum.EasingDirection.In)
		local TweenService = game:GetService("TweenService")
		for _,part in pairs(script.Parent:GetChildren()) do
			if string.sub(part.Name,0,3) == string.sub(script.Parent.Tween1.Name,0,3) then
				local Tween = TweenService:Create(part,Info,{Size = Vector3.new(0.37, 1, 0.05)})
				Tween:Play()
			end
		end
		wait(1.1)
		for _,part in pairs(script.Parent:GetChildren()) do
			if string.sub(part.Name,0,3) == string.sub(script.Parent.Tween1.Name,0,3) then
				part.Transparency = 1
			end
		end
		for _,part in pairs(script.Parent.TweenParts:GetChildren()) do
			
			local Tween = TweenService:Create(part,Info,{Size = Vector3.new(4, 0.05, 0.48)})
			Tween:Play()
		end
		wait(1.1)
		for _,part in pairs(script.Parent.TweenParts:GetChildren()) do
				part.Transparency = 1
		end
	end
end)

`
Thank for read and helping me
Vojta1587

You can’t Tween models. But, there is a module or tutorial that may help you: Introduction to Tweening Models

Oh my god, I tweening parts in that model that’s why I wondering because it!s want tween model but I want tween parts inside model