So im tweaking my own mod right now and I have slowed down time in travel and increased costs on all items. So in an effort to make the space battles seem more epic I decided to double up on all ships. For example if you build one tartan cruiser you would get two in combat.

 

I edited the SPACEUNITFRIGATE.xml and corvette and capital all of em. I changed number per squad from 1 to 2 and there is no change in game whatsoever. If anyone can tell me what im doing wrong or knows how to do this please help me out

Did you start a new game? I don't think ship changes work with saves.

Yes I start the game up fresh after every change I make

if you add more then 1 unit per item, add it to squadrons.xml (space) and groundcompanies.xml (ground)