ADD TEXTURES / UPHOLSTERY for cars add on

Does anyone know how to add upholstery to add on cars that only have one texture, I mean there are some vehicles that come with 2, 3 or 4 designs and in my case that I use in mod menu menyoo, I get the option to change the upholstery, but there are other cars that come with a single texture and this upholstery option doesn't even appear, does anyone know how to make them have more than one texture? I already tried to modify the name of the texture in Open IV since most cars have more than 2 textures, the name of these would be for example: "car_sign_1" "car_sign_2" but in the case of the vehicle that I want to modify its texture has the name "truck_camo" and I tried to rename it like the examples above but it does not detect the textures, does anyone know how to do it? 

This is the vehicle to which I want to add more textures / upholstery: https://es.gta5-mods.com/vehicles/ford-f350-armored-armed-vehicle-mexicomod-sp-fivem

Edited July 29, 20241 yr by Trax Doblenne