The notation with a colon is correct: <$attribute[attributename:elementname]>
Meanwhile I saved both the TOC and one chapter as MIF and had a look at the MIF source. In the chapter file, there is an element named DBookElementHierarchy, which contains information about the of the book root element and its attributes. In the generated TOC file, this element is not included. If I manually add <DBookElementHierarchy ... > to the TOC file, the attributes appear in my footnote variable. The element even remains in place when I update the book. However, if I change an attribute on book level, the attributes used in the variable are not updated. I guess I'm out of luck here. Any further suggestions are welcome. JoH
