GRT Avionics

I have the Navworx ADS 600B and dual Horizon HX. Traffic input is marvelous but I have one problem. I can set an altitude filter on the HX menu to include only traffic within a specified altitude range. However, I can't seem to be able to exclude traffic beyond a given range. Therefore if I pull up range of say 50 miles on the Map, I have traffic symbols all over the screen. Is there a way to limit traffic to say 10 miles or 8 miles or whatever? I think I remember that the original version of the Navworx had such a feature, but the new doesn't. Am I missing something? Thanks.