add new gwent cards?

[Hiei-YYH]

hey guys, is possible to add new custom gwent cards? i've tried adding in "def_gwint_cards_final.xml", "def_item_gwint.xml" and to buy "def_loot_shops.xml"

card appears on the shop but i have no idea why it doesn't add to the inventory, i'm presuming is the "index" which i have no cluse where i can find or add those values.

def_gwint_cards_final.xml

<card index="10" <<<<<<<<<<<<< where's located?????????????????
title="gwint_name_ciri" <<<<<<<<<<<<<< where's located?????????????????
description="gwint_desc_ciri" <<<<<<<<<<<<<<< where's located?????????????????
power="25"
picture="neu_ciri"
dlcPictureFlag_name="dlc8"
dlcPicture="neu_ciri_dlc"
faction_index="F_NEUTRAL" >
<type_flags>
<flag name="TYPE_CREATURE" />
<flag name="TYPE_HERO" />
<flag name="TYPE_MELEE" />
</type_flags>
<effect_flags>
<flag name="CP_MELEE_SCORCH" />
<flag name="EFFECT_RANGED_SCORCH" />
<flag name="CP_SIEGE_SCORCH" />
</effect_flags>
</card>

def_item_gwint.xml

<item name="gwint_card_ciri_2" hold_slot="" equip_slot="" template="" stackable="20" ability_slots="0" category="gwint" price="10"
icon_path="icons/inventory/gwint/ico_gwent_hero_neutral.png" localisation_key_name = "gwint_name_ciri" localisation_key_description = "gwint_name_ciri" >
<tags>GwintCardNeutral,NoShowInPlayersInventory,EncumbranceOff,Lootable,GwintCollectorAchievement,GwintCard,GwentTournament,GwentTournament,GT7</tags>
<base_abilities>
<a>max_card_3</a>
</base_abilities>
</item> -->

def_loot_shops.xml

<loot_entry name="gwint_card_ciri_2" player_level_min="0" player_level_max="0" quantity_min="1" quantity_max="1" chance="-1" /> -->