I would like users of my templates to be prompted to name their documents based on the content of a bookmark (usually one called DocNumber, but it could be a different one), which the user populates at file open via a userform. It appears to me that the Title file property is what needs to be changed. I have researched how to manually change file properties, and also how to create custom properties, but I couldn't find any guidance on replacing a property with bookmark content. When the user selects File > Save As, I want the content of the bookmark (usually a document number) to be pre-filled in the File Name box.



