It is likely that your orange wasn't juicy enough, so you probably didn't have enough liquid in your pan to start with. If you only have a small orange, add 1-2 tbsp of water to the mix. It is also possible that you cooked your stovetop carrots on higher heat. Make sure to place them on a small rink and reduce the heat to a minimum, so that the carrots gently simmer in the glaze.