Thanks so much, Woeful… saved me probably days of fruitless effort… once I get this up and running and into the mod I’ll certainly be giving you massive props.
Just in case you’re interested, I moved the CustomGameData to my mod root and used it directly by mapping it via PrimalGameData_BP. I see the new options in CustomGameData (nice update to the UI!) but interestingly the message is always that you’ve lost 0 experience regardless of player XP or whether it’s 5% or whatever. Anyway it was a quick 10 minute fiddle before I had to go out and I’ll take a proper look later… but so far I gotta say I’m impressed by your knowledge of the Ark blueprint event handling, callouts and how you reconstructed the array to update the value!