Manipulatung Gradient glass

[EM4616]

Hi,
Wondering what is the best way I can achieve the attached result, of a facade with a gradient of glass?
It is about two identical elements only, but with a different material of glass.
I would like to produce a gradient from clear glass to mirror glass and that I could control the direction of the gradient.
When the gradient starts from the corner of the building and rises in a diagonal direction to the height of the building.
I watched the video:
https://www.youtube.com/watch?v=yOt4VJDIH5I

But I could not achieve the desired result.
Is it possible to manipulate material only? In the railclone element ....

I would appreciate your assistance
Thanks !
Attach a picture of a desired result and a MAX file

[Paul Roberts]

Hi,

Please take a look at the attached file. I've modified the macro so that it works on the diagonal and added an option to switch directions.



I hope it helps,
Paul