WebDesigner / file upload node / MIME type

Hello experts!

I would like to configure the "Accepted MIME types" property on a "Upload file" node so that several different MIME types are accepted. In which Synthax does it have to be listed? In the following example, a file is only accepted if its MIME type corresponds to the first entry in the list.

."text/comma-separated-values, application/msexcel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, application/pdf, text/plain"

Many thanks, Christian