file.listDirectory includes square brackets and quotation marks

I'm learning programming whith App Inventor and it looks very interesting. Now I'm trying to use File Storage to save information in my phone. I want to list the files in the given directory but, when shown, the method adds square brackets to start and finist the list and quotation marks in every item. Am I doing something wrong or is it a bug?

Thanks a lot

Use Elements not ElementsFromString ?

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Instead of the Element From String block, use Elements.

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I'll try tomorrow.