Trying to fix my macro: Single Token Action for Two Weapon Fighting (without TWF feature) [D&D 5.0]

Have a PC who wants to fight with two weapons, but doesn't have TWF feature.  Instead of making two Token Actions per weapon, I'd like to have a query for each weapon attack to ask if it's a Primary attack or Secondary attack since their secondary attack would not add the ability mod to the damage. So far, I've tried to add ?{Attack type|Primary,@{Velvet Bite|dexterity_mod}|Secondary,0} to the +__ of damage within the character sheet weapon's settings.  I'm afraid it might not be reading correctly.  Is there a way I can alter this to make it work?

If you put the following into the description field of an attack you should get the desired result: }} {{dmg1=[[1d4 + ?{Attack type|Primary,@{Velvet Bite|dexterity_mod}|Secondary,0}[DEX]]] note: it works best with auto damage as it will ask when an attack is run AND when damage is rolled otherwise

Thanks!  I ended up editing the Token Action macro itself and got it to work, but I much prefer having it on the character sheet as well.