how to make a group only door|roblox

local groupId = 0 -- Insert Group Id Here

script.Parent.Touched:connect(function(hit)
 local hum = hit.Parent:findFirstChild("Humanoid")
 if hum then
  local player = game.Players:GetPlayerFromCharacter(hit.Parent)
  if player then
   if player:IsInGroup(groupId) then
    script.Parent.Transparency = 0.8
    script.Parent.CanCollide = false
    wait(1)
    script.Parent.Transparency = 0
    script.Parent.CanCollide = true
   end
  end
 end
end)

-- if the player has joined the group and has touched the brick, it will let them through. Make sure to copy the id of the group and paste it where the group id = 0 is.