Haysadan..how do I fix the stench problem?

Can someone tell me what I need to change(type slowly,am a nob at moding) to fix the Haysadan,so they can get the sewers in my towns?..what files do i need to change..and what are they listed under in the data file?(for some reason Pontus=cathage in the data file)

Hayasdan is {romans_scipii,}. Why has to do with the way modding RTW v1.2 worked. Just find "sewers requires factions {..." and add "romans_scipii," to the list.

Many thanks,problem solved..gb