how the hell i can change multiples viewmodels in Modding

Hello, I'm trying to make sure that each character on Shi no Numa and Der Riese has their own more accurate hands. To do this, I've stealed a few things from the World at War Remastered mod https://www.ugx-mods.com/forum/mods-releases/61/t4m-nazi-zombies-remastered-der-riese-release/23262/ but no matter how hard I try, It don't work and i don't know anything about modding and scripts, i don't want to waste any more days, I hope someone can help me. I think I already have all the necessary files:

viewmodel_rus_guard_c.iwi
viewmodel_jap_infantry_c.iwi
pby_crew_viewarm_c.iwi

viewmodel_hands_cloth_marine_bare (xmodel i think)
viewmodel_rus_guard_arms
viewmodel_jap_infantry_arms
viewmodel_usa_pbycrew_arms

(There is no iwi for “viewmodel_hands_cloth_marine_bare” because these are the default arms, but the xmodel alone removes the sleeves, so it remains important.)

and for the scripts i have

char_zomb_player_0.gsc

Plaintext

// THIS FILE IS AUTOGENERATED, DO NOT MODIFY
main()
{
    self setModel("char_usa_marine_polonsky_zomb");
    self SetViewModel("viewmodel_hands_cloth_marine_bare"); // Added
    self.voice = "american";
}
 
precache()
{
    precacheModel("char_usa_marine_polonsky_zomb");
    precacheModel("viewmodel_hands_cloth_marine_bare"); // Added
}

char_zomb_player_1.gsc

Plaintext

// THIS FILE IS AUTOGENERATED, DO NOT MODIFY
main()
{
    self setModel("char_rus_guard_chernova_zomb");
    self SetViewModel("viewmodel_rus_guard_arms"); // Added
    self.voice = "russian";
}
 
precache()
{
    precacheModel("char_rus_guard_chernova_zomb");
    precacheModel("viewmodel_rus_guard_arms"); // Added
}

char_zomb_player_2.gsc

Plaintext

// THIS FILE IS AUTOGENERATED, DO NOT MODIFY
main()
{
    self setModel("char_jap_impinf_officer_body_zomb");
    self SetViewModel("viewmodel_jap_infantry_arms"); // Added
    self.headModel = "char_jap_impinf_officer_head";
    self attach(self.headModel, "", true);
    self.hatModel = "char_jap_impinf_officer_hat_zomb";
    self attach(self.hatModel);
    self.voice = "japanese";
}
 
precache()
{
    precacheModel("char_jap_impinf_officer_body_zomb");
    precacheModel("viewmodel_jap_infantry_arms"); // Added
    precacheModel("char_jap_impinf_officer_head");
    precacheModel("char_jap_impinf_officer_hat_zomb");
}

char_zomb_player_3.gsc

Plaintext

// THIS FILE IS AUTOGENERATED, DO NOT MODIFY
main()
{
    self setModel("char_ger_ansel_body_zomb");
    self SetViewModel("viewmodel_usa_pbycrew_arms"); // Added
    self.headModel = "char_ger_ansel_head_zomb";
    self attach(self.headModel, "", true);
    self.hatModel = "char_ger_waffen_officercap1_zomb";
    self attach(self.hatModel);
    self.voice = "german";
}
 
precache()
{
    precacheModel("char_ger_ansel_body_zomb");
    precacheModel("viewmodel_usa_pbycrew_arms"); // Added
    precacheModel("char_ger_ansel_head_zomb");
    precacheModel("char_ger_waffen_officercap1_zomb");
}

For _loadout.gsc, I only tested the one for Shi no Numa, and I just deleted the line that automatically replaces their viewhands with the original, following this tutorial: https://www.ugx-mods.com/forum/scripting/50/how-to-assign-viewhands-models-for-each-player/24538/

i have the mod.csv with the xmodel name in it and that's it
Now I don't know what to do. I'm sure that I am setting up the mod incorrectly or that I wrote the script incorrectly

Also, if it's not too complicated, I'd like to make one of the players on Verruckt has Dempsey's skin with or without a helmet + the same viewhand that I put for him here, since he uses Polonsky/generic dempsey appearance, it shouldn't be difficult.

here my files:
https://mega.nz/file/OQU3jCyB#oCKsAu-xP6uakTG5MmR0VsnXcUlgsCjRFJiSpw8Dn3g

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how the hell i can change multiples viewmodels