Tamayomeri, i went into rpgmaker and looked at the specific part you posted. the place where the variable is set is in room 453, and the plant room is room 442. thats all i can tell you unfortunately because room 453 has no tile sprites and is a just a black room when viewed in the editor, so i have no idea how to get there. the event that goes on is interesting though, it shows images and apparently 'changes' characters names. if anyone finds out where that room is i'd love to hear about it :)