How to use MeshRenderer.materials

[UNITYx21]

Hello everyone. i just imported a 3d model with two materials from blender and i want to change one of the materials with code and i tried using MeshRenderer.materials[0] = myMaterial but it doesn’t work
can anyone help me?
Thanks!

[SurreyMuso]

You can’t change an individual material. Instead, copy them all out, update the one you want then write them all back.

 Material[] allMaterials = gameObject.GetComponent.<Renderer>().materials;
 allMaterials[4] = material6;
 gameObject.GetComponent.<Renderer>().materials = allMaterials;

The documentation says: “If you want to change some materials in it, get the value, change an entry and set materials back.”