I HAVE a cannon and i want that cannon to shoot both ways, that works but i need the bullet that is being shot backwards to be flipped because it looks stupid can anyone help with this.
Give me the link to your game
Click “Rotate Objects” on your emitter. 
which emitter I tried on both and it didnt work
Both. I have no idea why its not working then, try reloading the tab.
You could just make a new object for and inverted bullet.