Does someone know how i should write my script to change one of the textures i have in a gameobject that have 5 differents textures?
the idea is that i only want that my avatar close the eyes. For that i have a texture, i only have to know how to change the texture of the face, that is the 6th texture on my game object. i can not use “main texture” in script… the main texture is the pant … :d
The Material class has a GetTexture command that lets you access a named texture.
Thank you, seems that will work beter
But something must be wrong in my script…
var eyesClose : Texture2D;
var Myu : GameObject;
function Start(){
yield WaitForSeconds(15);
var TexEyes = Myu.renderer.material.GetTexture("base.head");
TexEyes = eyesClose;
}
I’m not sure if i have to write (“_base.head”) or simply (“base.head”) but i tried the 2 and no one works.
the console tell me: [Material doesn’t have a texture property ‘base.head’]
but you can see in the image above, that the name of te material is “base.head” and the name of the texture also, the same…
Can you help me?

Ok well, i fix it, i find a good answer in another topic. So if it can help someone in future, here is the final script for it work:
var eyesClose : Texture2D;
function Start(){
yield WaitForSeconds(15);
var Myu = GameObject.FindWithTag("avatar");
Myu.renderer.materials[5].mainTexture = yeuxFermes;
}
So if i understand all, material[0] is the basic main material, and if you have 6 materials in your object, you want to change the 4rth material, you will call it material[3] 
And works perfectly 