Insert some variables like 'page number' and select the text. Copy the text. Somewhere else in the document, preferably on another page, paste the clipboard. The pasted page number variable will show inconsistent but certainly incorrect data.
Thank you for your bug report or feature suggestion. The "KOffice" application suite is no longer maintained, and all tickets are now closed. We recommend to switch to the "Calligra" application suite, which has replacements for all unmaintained KOffice applications: - KWord was replaced with Calligra Words - KPlato was replaced with Calligra Plan For more information, see http://en.wikipedia.org/wiki/Calligra_Suite (This is an automatic message from the KDE bug triaging team)