{@flowTitle@}, {@flowComposer@} and {@flowArranger@} on master pages do not detect the text

{@flowTitle@}, {@flowComposer@} and {@flowArranger@} on master pages do not detect the text.
They are displayed as {@flowtitle@}, {@flowComposer@} and {@flowArranger@}. Am I missing something here?
See the following attachment:


https://www.steinberg.net/forums/viewtopic.php?f=246&t=158301&p=849107&hilit=Flowtoken#p849107

Thanks!