Using Word 2010, I've added a custom property to my document, Something, and I've set the value to XYZ. In the document, I hit Ctrl+F9 to insert a reference, and I type { DOCPROPERTY [Something] }. When I go to print preview, the page is blank, and returning to my document, I find my reference is now gone.
What is the proper way to insert a reference to a document property?