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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
That's not an issue. More like your code's problem, which is a question.
You should post your code in spoilers and let like everyone point out the bugs in your code ;-)