Changing normalmap tiling

Hi,
I am using a Bump Diffuse texture for a Floor object.
I successfully used renderer.material.mainTextureScale in C" script for changing the tiling of Base texture
(depending on the size of my Floor size), or renderer.materials[n] for the walls who have a multi texture/tiling.

But I don’t find the equivalent for the normalMap texture, does anyone how it’s done ?
Thanks

Regards,
D. F.

Thanks

I will try at home something like
renderer.material.SetTextureScale (“_BumpMap”, Vector2(scaleX,scaleY));