Can someone please advise me what is the best practice for handling Image fields in a collection when that field is not a mandatory field i.e. I need to cater for the case when there is no image associated with that record. I've tried obviously setting it equal to image.src when that contains an empty string, but then you get the message "Cell value is text. Change to Image". I dont want to use a default image. Do I have to redefine the field type as string and just store the URL?