I want to change this during Update().

Thank you ![]()
I want to change this during Update().

Thank you ![]()
Something like this sould do:
renderer.material.SetFloat("_BumpScale", newNormalMapScaleValue);
You can download the build in shader and look inside what all the property’s are called.
Built-in Shaders for Unity 5.0 RC3
Then you can set / get the values via the material class at run time.