I am wondering if it is possible to mod in a building that will increase the attack range of a city. I want to add a building that when built in a city will increase its attack range by 1. I couldnt figure out a way to do this with just xml so I am guessing that I would have to do it with LUA but I know absolutely nothing about LUA, if anyone can provide me with directions or write up the code I would need to do this, I would be very appreciative.