How to show rates per city

Hi there. I am from pakistan and I want to set different shipping rates for all cities within my country.
Now as you mentioned in plugin features that you can create as many rules as you want in per country or per state or per region, so I choose per country thinking that I will selected pakistan in each rule and make cities as rules name and then set different rates for them ?? . May be I am doing wrong.

Please tell me is this not possible with this plugin what I am requiring?