Modifying drop down menu for units St Nazaire

I’m new to VASSAL. I’m trying to play the VASSAL module Raid on St. Nazaire. In the game the British player can fire at German Guns and Searchlights. This can result in a Disrupted or Out of Action result. In the boardgame there are Disrupted/Out of Action counters you place on the Gun or Searchlight as needed. In the VASSAL module you can access the drop down menu for the Searchlights and click on Disrupt/Out of Action and it adds :question: this counter. However the guns, which should also have this option, do not. How do I add this option to the German Gun counters? Although I don’t know what I’m doing I accessed the game editing function and located the German Gun and Searchlight counters. I checked the attributes and saw that the Searchlight counters have something called LAYERS while the Gun counters do not. I suspect this is where I need to make the required change, but I don’t know how to proceed. Can any of you Grognards and/or VASSAL geeks help me out?