How to change team with gamepass?

I've been working on a game for over a week now nonstop but I keep running into problems with my scripts and ui's. When I make a script for a gamepass so when you click it changes your team but nothing works.

Okay i'll try and guide you, but i'm going to use a Developer Product as that's what im farmiliar with

So inside a button on the players UI, have a button linking to a developer product (Local script)

local MarketplaceService = game:GetService("MarketplaceService")
local player = game.Players.LocalPlayer

script.Parent.Activated:Connect(function()
	MarketplaceService:PromptProductPurchase(player, insert developer product id here)
end)

Then, in a script in server script service

local MarketplaceService = game:GetService("MarketplaceService")
local DataStoreService = game:GetService("DataStoreService")

local PreviousPurchases = DataStoreService:GetDataStore("Receipts")

local developer_product_id = 12342134214(whatever the product id actually is)

MarketplaceService.ProcessReceipt = function(receipt)

--This bit checks if they have already purchased it
	local ID = receipt.PlayerId.."-"..receipt.PurchaseId
	
	local success = nil
	
	pcall(function()
		success = PreviousPurchases:GetAsync(ID)
	end)
	
	if success then -- Has it already been bought ?
		-- Purchase has already been done
		return Enum.ProductPurchaseDecision.PurchaseGranted
	end
	
	local player = game.Players:GetPlayerByUserId(receipt.PlayerId)
	
	if not player then
		-- Left, disconnected
		return Enum.ProductPurchaseDecision.NotProcessedYet -- We're going to give their rewards next time they join / next time fired
		else
		
		if receipt.ProductId == developer_product_id
			--Insert script here to change teams
		end
		
		pcall(function()
			PreviousPurchases:SetAsync(ID,true)
		end)

		return Enum.ProductPurchaseDecision.PurchaseGranted

	end
end

This is a modified script from an AlvinBlox tutorial, so I can't take full credit :P

use/try this:

local gamepassID = ******

script.Parent.MouseButton1Click:connect(function (playerWhoClicked)
    local player = game.Players.LocalPlayer
    local gps = game:GetService("GamePassService")
    local playerHasPass = gps:PlayerHasPass(player, gamepassID)

    if playerHasPass then
          player.Team.Name = "HATO"
    else
        gps:PromptPurchase(player, gamepassID)
    end
end)

i think its work