How to do actions after checking if the player has a gamepass or not?

local player=game.Players.LocalPlayer
local soundboard=player.PlayerGui.ScreenGui.SoundBoard
local uis=game:GetService'UserInputService'
local gps=game:GetService'GamePassService'
local ms=game:GetService'MarketplaceService'

uis.InputBegan:Connect(function(input)
    if input.KeyCode==Enum.KeyCode.B then
        if gps:PlayerHasPass(player,967732491)then
            soundboard.Visible==not soundboard.Visible
        else
            ms:PromptPurchase(player,967732491)
        end
    end
end)

What I want it to do is to check if player has a gamepass. If he/she does - show/hide the sound board and if he/she doesn't - offer him/her to buy the gamepass. But this always suggests player to buy the sound board and when he/she does buy it and press B again - it show that he/she has already bought the gamepass but not the sound board. I need your help!