How do I change something that checks for player in a group to if the player owns my gamepass?

So here's the scripting, you don't need lines 47 - 101 the game pass id is 6056277 if u need it but thats in a config folder.

local Seat = script.Parent

local PlaneTool = Seat.Plane

local PlaneMain = Seat.Parent.Parent

local Customize = PlaneMain.Customize

local Crashed = PlaneMain.Crashed

local Origin = PlaneMain.Origin

local Player = nil

-----------------------------------------------------------------------------------

function CheckPlayer(Player) --This function checks the player

if Customize.GroupSpecific.Value then --If the GroupSpecific value is true...

if (not Player:IsInGroup(Customize.GroupSpecific.GroupID.Value)) then --If the player is not part of the group...

return false

end

end

return true

end

  

function CreateWarning(Player)

local RbxGui = assert(LoadLibrary("RbxGui"))

local Screen = Instance.new("ScreenGui")

Screen.Name = "NotInGroupGui"

local Gui = RbxGui.CreateStyledMessageDialog(

"You are not in this plane's group!",

Player.Name..", you are not a part of the group that this plane is in! Please exit the plane!",

"Confirm",

{

{

Text = "OK";

Function = function()

if Screen.Parent then

local MessageDialog = Screen:findFirstChild("MessageDialog")

if MessageDialog then

MessageDialog:TweenPosition(UDim2.new(0.25,0,0,-165),"In","Back",0.7,true)

end

wait(0.7)

Screen:Destroy()

end

end

}

}

)

Gui.Parent = Screen

Screen.Parent = Player.PlayerGui

return Screen

end