Sign Schedule - filter based on graphics parameter?

[daneb]

I've created a yes/no parameter inside of a door family that would allow me to turn on and off certain room/accessibility signs where necessary. The actual signs are nested in the door family and are made under "specialty equipment". Graphically this works, but does anyone know if I can filter based on this graphics yes/no parameter?? Meaning, if I clicked "yes" it would show up on the sign schedule, otherwise it wouldnt.

[Scott Womack]

IT will ned to be a shared parameter, it can then be added to the schedule, hidden, and filtered on.