In Spore Galactic Adventures the complexity of my creature keeps me from adding any weapons for the adventures?

I have a large creature, and it has a high complexity which is preventing me from adding ANY parts for the galactic adventure phase. It is frustrating, I tried the freedom complexity cheat in the quick play menu, and it said "The freedom cheat can only be run from within the non-game editors", o geez I am unfortunately not understanding that. I really like playing and wish to solve this. Thanks