city = units uses string keys.

Goal

Print Nairobi units.

local units = { Nairobi = 12, Mombasa = 8 }
print(units.Nairobi)
print(units["Mombasa"])

local row = { city = "Kisumu", units = 5 }
print(row.city, row.units)

local kiosks = { Nairobi = 12, Kisumu = 5 }
kiosks.Eldoret = 3
print(kiosks.Eldoret)

local nested = { city = "Nakuru", sale = { units = 4, price = 40 } }
print(nested.sale.units)