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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.
Read this: https://docs.codewars.com/training/troubleshooting and mark your post as having spoiler content next time. About your problem: read the error message and see the second example in the description and you'll have your answer.
I can point out 2 issues in your code.
Read this statement carefully -->
Print all numbers up to 3rd parameter, and then refer to 1st sample testFigure out on how to represent a number which satisifes the condition -->
multiple of both 1st and 2nd parameter.