Toggle Hidden Units not working

[Blackcloud6]

Hi Blackcloud6, if I'm reading you right then you need the following statuses in solitaire play:

• hidden
  
• not hidden, unspotted
  
• spotted
  

Is that the basic idea?

Yes.  The last two could simply be done with the spotting indicator now in the module.  The "hidden" status might be done with a counter of top if you can't do a flag.   This marker could be used for potentially hidden pieces using the last portion of the hidden rules for solitaire, or simply to note that the unit is hidden and thus harder to spot; either way depending on how the player is playing.