Mcreator 2021.1 sound armor footsteps/jump

Hi, I'm creating power armor in Minecraft for version 1.12.2, in general everything works, but I ran into one problem. How do I change the walking/jumping sound of a player wearing this armor? For development, I use mcreator 2021.1 (with a generator that supports version 1.12.2), how can I fix my problem with custom code?

Here is a link to my armor code (without 3d model elements). Sorry for the link, but I couldn't figure out how to insert my code correctly on the forum. (https://ctxt.io/2/AAC4GMRFEQ)