Replacing Hydras with Manticores.

I want to improve the mod in terms of necromancy. I managed to make it so that when necromancers are killed, undead dragons don't rise. But how can I make it so that these necromancers (formerly manticores) can be raised from druids, mages, etc.? I'm doing this: In the RPGstats file, I change this: Item Dead>CREATURE_DRUID Rise>CREATURE_LICH /Item to this: Item Dead>CREATURE_DRUID Rise>CREATURE_MANTICORE /Item But it seems like this isn't enough, because after I attack a druid, nothing happens. No one is resurrected. Please advise on how to fix this.