GUI does not show up when i play

ok so i have been following the fps tutorial on the unity website. and i made a GUI for a health bar and bullet count. But when i export my game and play it the GUI does not show up. The GUI does not show up if i hit maximize to play either. it only works in the little window.

no it works in the game window. But when i build the game/ export the game the gui does not show up. It also does not show up when i chose the maximize on play thing.