Just put both my mod and the XML injector script into your Sims 4 Mods folder. How to install Mods in The Sims 4 - EA Help
Transformation typically involves specific interactions within the game world: Succube Graph by Mich-Utopia at Sims 4 Passions
: Most of UTOPYA's mods require the Lot 51 Core Library or an XML Injector script to work. Just put both my mod and the XML