Why does my setcore notification come back when I die?

So I'm not an advanced scripter, and I'm wondering. How would I make it so that my setcore notification goes away when I die? That doesn't make a whole ton of sense, but basically, when I die and respawn, the notification comes back. How can I fix that?

game.StarterGui:SetCore("SendNotification",  {
    Title = "testing.";
    Text = "";
    Icon = "";
    Duration = 15;
    Button1 = "yes";
    Button2 = "no";
    Callback = NotificationBindable;
})