How do you change the max number of units in a downloaded usermade map?
Just increase the amount of of AI units - Just like with a normal map. Just. uh. be careful. Some of the larger maps will add a couple of hundred units fighting at once, causing crashing and/or major lag issues.
sooo.. if theres a map and it only allows 32 units on the field, you can't increase it so that it has 200?
Not really, not without editing the files that deal with unit count...