Bigger Dungeons

I am trying to generate a large labyrinth-type dungeon, but after its generated, it's just too small. Because I can only have up to 7 generations with mcreator, it just ends up being way too tiny to have any fun. I tried to manually edit the amount of times it could generate, but after I did, whenever I tried to open a world it would just keep crashing till I changed the code back. Is there a way with mcreator to make dungeons generate more than 7 times? And if not, then how should I go about making it?