GUI script about changing materials works in studio but not ingame?

So this is the local script

script.Parent.MouseButton1Click:Connect((function()
    local location = game.Players.LocalPlayer.PlayerGui.MaterialGui.Frame
    game.ReplicatedStorage.Materials:FireServer(location)
end))

And this is the main script

--Material Handler
game.ReplicatedStorage.Materials.OnServerEvent:Connect(function(player,location)
    location.ScrollingFrame.Visible = true
    location.ScrollingFrame.Close.MouseButton1Click:connect(function()
        location.ScrollingFrame.Visible = false
    end)
    location.ScrollingFrame.SmoothPlastic.MouseButton1Click:connect(function()
        script.Material.Value = "SmoothPlastic"
    end)

    location.ScrollingFrame.Plastic.MouseButton1Click:connect(function()
        script.Material.Value = "Plastic"
    end)

    location.ScrollingFrame.CobbleStone.MouseButton1Click:connect(function()
    script.Material.Value = "Cobblestone"
    end)

    location.ScrollingFrame.Brick.MouseButton1Click:connect(function()
    script.Material.Value = "Brick"
    end)

end)

It works in studio but not in game .Help please