Unable to assign property MeshId. Script write access is restricted?

--Note That Everything Is Correctly Done--

It Breaks At this line "PlrCha:FindFirstChild(v.Name).MeshId = v.MeshId"

local PacksIDs = AS:GetAssetIdsForPackage(T)
			local PlrCha = plr.Character
			for i ,v in pairs(PacksIDs) do
				wait()
				if plr.Character:FindFirstChild('Humanoid') and plr.Character:FindFirstChild('Humanoid').Health > 0 then
					local LoadedPack = IS:LoadAsset(v)
					local LoadedPackChild = LoadedPack:FindFirstChild('R15'):GetChildren()
					for i ,v in pairs(LoadedPackChild) do 
						wait()
						if PlrCha:FindFirstChild(v.Name) then
							PlrCha:FindFirstChild(v.Name).MeshId = v.MeshId
						end
					end
					else break
				end
			end		

I am trying to make a Gui that Allows the Players to change their Character package by using it's ID.

Is there any way to fix this? or any alternative ways?

Thank you for your support

NVM , The Problem is now Solved