Changing report text to blank depending on user selection (NAV 2013)

LewisTioga

I have a report set up which displays two values (Version Code, and Production BOM Number). I have an existing option which prints 2 of these when a 'double sided' option is selected however I need to add a option to remove these and make the areas blank. In the code below you can see the double sided one is called gblnTwoSided and my new one has been called gblnNA.

Any suggestions on how to write this so I can get a blank output. Thanks