The problem with variables (2024.1)

I want to make a story in Minecraft like the YouTuber "Lololoshka", but when I try to make an animated NPC, then when I set the npc in the variable Story 5 animation through the Geckolib plugin, when the variable Story 6 begins, I can't change the animation in any way, because the animation has already been set in another variable, as I understood the animation I got attached to that variable and when it changes, I can no longer interact with it in any way, how can I solve this problem?