Create a new catalouge

An app that I'm working on needs to save files in a catalogue. Somtimes the catalouge does not exist. How do I create catalouges if they aren't already made?

What's a catalogue? Is it a folder/directory?
In that case you use dir and mkdir as follows:

Code:

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if len(dir(dirpath,vbdirectory))=0 then mkdir dirpath

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Thanks kedaman! I meant a directory, couldn't find the word for it. Sorry and thanks!!