Shine part wont stay with tweening part

[Philipceo90 (Phil)]

Code

script.Parent.Touched:Connect(function(hit)
	
	if hit.Parent:FindFirstChild("Humanoid") then
		
		local plr = game.Players:GetPlayerFromCharacter(hit.Parent)
		
		if plr then
			
			local Reward = math.random(5,12)
			
			plr.leaderstats.Gems.Value += Reward
			
			script.Parent:Destroy()
			
		end
		
	end
	
end)

local FloatPos = {
	Up = Vector3.new(12.27, 2.013, 15.429);
	Down = Vector3.new(12.27, 1.513, 15.429);
}

local TS = game:GetService("TweenService")

local FloatDuration = 0.8

while true do
	
	local Change = {Position = FloatPos.Up}
	
	local Anim = TS:Create(script.Parent, TweenInfo.new(FloatDuration,Enum.EasingStyle.Sine,Enum.EasingDirection.InOut), Change)
	Anim:Play()
	
	task.wait((FloatDuration + 0.05))
	
	local Change2 = {Position = FloatPos.Down}

	local Anim2 = TS:Create(script.Parent, TweenInfo.new(FloatDuration,Enum.EasingStyle.Sine,Enum.EasingDirection.InOut), Change2)
	Anim2:Play()
	
	task.wait((FloatDuration + 0.05))
	
end

The shine mesh has anchored off but the gem mesh has anchored on

[0msh]

try tweening the CFrame instead of the position

[Philipceo90 (Phil)]

Worked! Can you please explain why this worked?

[0msh]

I can’t fully explain, I just know that tweening part’s position when it has welds attached it won’t move the other parts. Like when you try to move a model using PivotTo or SetPrimaryPartCFrame, they accept CFrame as parameter and not position