Multiple File Types

When specifying requested files types for a root folder, is there a way to specify multiple extensions?

I've tried separated lists:

jpg,gif,bmp
jpg;gif;bmp

What is the proper syntax for this field?

Thanks.

You should specify a semi-colon separated list of file extensions such as 

*.jpg; *.gif; *.bmp

Note that you can also define the allowed file names and not the extensions only. For instance, you can use * in any part of the filename such as picture*.jpg which matches "picture34.jpg" or "picture 112.jpg" or use it in the extension such as *.jp* which matches "file.jpg", "file.jpe" or "file.jpeg".