Custom model to horse armor

I`m beginner at the datapacks, and in internet almost no info to this, so here's my question: is it possible to change model (or texture) of horse armor? I've tried by changing asset_id like in other datapack, but this does'nt help (on horse no visible armor). Tried also override > predicate, but also not work. I'll be glad if you help me guys🙏

  1. Recipe to armor
  2. How I tried to override texture/model
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