I believe the syntax is allowed for positive bonuses.

Quote Originally Posted by vanilla EDB
Code:
        blacksmith requires factions { barbarian, carthaginian, eastern, parthia, egyptian, greek, roman, }  and building_present_min_level market trader
        {
            capability
            {
                recruit "barb chariot light briton"  0  requires factions { britons, } 
                recruit "east scythed chariot"  0  requires factions { pontus, } 
                recruit "egyptian chariot"  0  requires factions { egyptian, } 
                recruit "rebel amazon chariots"  0  requires factions { slave, } 
                recruit "greek chariot scythed"  0  requires factions { seleucid, } 
                weapon_simple 1
                weapon_bladed 1
            }
            construction  3 
            cost  1200 
            settlement_min large_town
            upgrades
            {
                smiths_workshop
            }
        }
I'm rather surprised that we still have equipment upgrades in temples though.