Relic Castle

So I've been fighting this problem for a while now and today just had me give in. Essentially what I'm looking for is forcefully moving a Pokémon's position in the party. I tried using the code used in this thread but it just didn't work for me. I'm unsure if this is because I'm using Essentials v16.2 or I just messed up the coding in there. If at all possible the ideal solution would be I could move the Pokémon to another party slot, regardless of species. If none of this is possible then I'd like to know if I could search for more than one Pokémon at a time in a conditional branch. Thanks in advanced, I'm plunging into unknown coding territory but it's fun! Can't wait to learn more and get better at making fan games!