How do I make this force field allow only certain players through?

I don't know how to explain this very well, but it is a door that when a non-group member or rank 1 group member passes through it'll solidify and kill anyone who touches it while setting an alarm off, but if you are a group member and you have the rank 2+ then it'll let you through without anything happening. The door part works, but the sound will only play once if you are in the group and have a rank of 2+.

game.Players.PlayerAdded:connect(function(Player)
local Rank = Player:GetRankInGroup(4087912)
local Enter = script.Parent.Enter
local shield = script.Parent
local debounce = false
local kill = shield.Kill
local flash = script.Parent.Flash

shield.Touched:Connect(function()
    if debounce == false then 
            debounce = true
    Enter:Play()
if Rank == 0 or Rank == 1 then  
    workspace.AlarmSound:Play()
    wait(.6)
    flash.Disabled = true
    kill.Disabled = false
    shield.CanCollide = true
    shield.Transparency = .5
    wait(.005)
    shield.Transparency = .4
    wait(.005)
    shield.Transparency = .3
    wait(.005)
    shield.Transparency = .2
    wait(.005)
    shield.Transparency = .1
    wait(.005)
    shield.Transparency = 0
    wait(35)
    kill.Disabled = true
    flash.Disabled = false
    workspace.AlarmSound:Stop()
    debounce = false
end
end
end)
end)

Thanks if you can help.