How to switch between multiple textures in a material using a driver

Question

I have a customizable model with multiple textures for the body (4 to be exact). How would I be able to easily switch between these textures with a driver. If I had 2 I'd be able to use a mix modifier and add a driver to the factor slider, but since it only has two inputs I don't know how I could do that.

For more specifity, I want to achieve what is answered in this question, but with more than two inputs: Is there an easy way to create a model with multiple texture inputs and then easily switch between them?

Answer 1

Create a custom property, min=0, max=3

use these drivers for the mix factors:

first driver:

second driver: like first, but scripted expression is "prop - 1"

third driver: "prop - 2"

material:

result:

if you wanna do it more carefully you can also use

max(prop - 1,0)