UE4 - 3 Digit Display Material with countdown Blueprint

I wanted to create a digital display in material that could be used on a prop or weapon.
This setup has 3 Digits but could scale up easily if needed.
The material has a parameter for each digit that can be set manually, or received input via a blueprint.
In this example i have a blueprint that counts down from a set number. I separate the number into 3 digits and then set the relevant material parameter to update the display.
I built some simple logic in the material to display different colours at different number thresholds, like a low ammo warning.