Hi! I'm trying to create GUI for my RPG. I followed guide on creating HP bar, but I would like to create whole menu, which player would activate by clicking a menu button. This HP bar works perfect with onJoinMap function, but in onInput function all I get is "player.callMainMenu is not a function", or "player.gui is not a function" when i put there line with HP bar. How can I make menu button work?