grouped part(Pet) please help?

script

local pet = script.Parent

function givePet (player)
 if player then
	 local character = player.Character
  if character then
   local humRootPart = character.HumanoidRootPart
   local newPet = pet:Clone() 
   newPet.Parent = character
   
   local bodyPos = Instance.new("BodyPosition", newPet)
   bodyPos.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
   
   local bodyGyro = Instance.new("BodyGyro", newPet)
   bodyGyro.MaxTorque = Vector3.new(math.huge, math.huge, math.huge)
   
   while wait() do
    bodyPos.Position = humRootPart.Position + Vector3.new(2, 2, 3)
    bodyGyro.CFrame = humRootPart.CFrame
   end
  end
 end
end

game.Players.PlayerAdded:Connect(function(player)
 player.CharacterAdded:Connect(function(char)
  givePet(player)
 end)
end)

so my script works on 1 block. but if i added more blocks and grouped it, it doesn't work! please help!?