Thanks for a quick reply but I cannot figure out how this guy come from chinese can add more reserve slots
I want to balance the higher level and lower level creature in my mod because ppl keep using higher level without consider lower level monster. I decided to make a drawback when buying higher level monster by raising the price of them up to 3 times. So that, the player has to consider carefully before decide to buy a level 5 unit

What do you guys think about it? Any suggestion is appreciated