Welcome to the Ranch! It looks like some others have taken the time to figure out what problems you might mean. For future reference, you can help us help you more easily (and quickly) if you tell us what problems you have encountered. For example, if you are getting errors when you compile your code, you should post the error messages that you get. The more specific your questions and the more details you give us, the better we will be able to help answer the right question rather than guessing and getting off track on something you might already understand. For more suggestions on how to asks questions to get the answers you want and need, take a look at this page in our FAQ.