I've seen this FAQ but even then... In Chronoforms it's that easy to create and edit a form just by drag and drop but including an attachment some code has to be added???
Well... since I don't have any idea what I'm doing I just added the custom code action before the Email action and changed all highlighted to bijlage. Still it doesn't send any attachment with by mail. (also changed the fieldname to bijlage and in the Email-Template I added {bijlage}.
I don't understand why and how it's possible to use a name for the attachment as I don't know what file a user is uploading. :?