expanding a units AoR

[Hooahguy]

ok- i think i found it....... seeing that Baktrias internal name is romans_brutii, i found the "greek infantry kleruchoi hoplitai" in the "city_barracks_K1" section.....

heres what it said for the klruchoi section, there were 5 lines, but all said the same thing:

recruit "greek infantry kleruchoi hoplitai" 0 requires factions { romans_brutii, } and hidden_resource EA and hidden_resource D and hidden_resource y1 and hidden_resource y2 and hidden_resource y4 and hidden_resource n8

so what do i need to change if i just want to expand their recruitment to the 3 original provinces for baktria?