I've been stumped for over a month on how to do this. Here's the script, probably wrong but I need some insight, Thanks!
local player = game.Players.LocalPlayer
script.Parent.Parent.MouseButton1Click:Connect(function(click) if player.leaderstats.Simucoins.Value >= 50 then player.leaderstats.Simucoins.Value = player.leaderstats.Simucoins.Value - 50
game.Workspace.Scripts.NStorage.Disabled = false and game.Workspace.Scripts.BStorage.Disabled == true
end
end)

2 comments
What exactly is wrong, is it that the backpack doesn't upgrade or that the upgrade doesn't save?
the backpack won't even been equipped. all it does is take my (Money) Simucoins.