Question regarding animation mods: How do I replace the attack animation?

What I've done up to now is just simply change the Macehualtin text from

<anim>Charge_Attack<assetreference type="GrannyAnim"><file>animation_library\natives\macehuatlin\charge_attack1...

to

<anim>Charge_Attack<assetreference type="GrannyAnim"><file>animation_library\natives\inca\bolas_warrior_charge_attack_1...

For some reason, it works well with the Bolas (their melee animations are the same lol), but refuse to works with anything else I've tried (Longbow, Tomahawk,Janissary,...)

Anyone have the idea?