Color invert - bump map

[zooropa]

Hi. I downloaded a 3d block from cgaxis. I believe I need to invert the bump map since KS works with the opposite type of information.
The problem is I the " color invert "  node is not allowing me to connect to the bump channel of my material.

Hope somebody can helps.
Thanks

Please find attached a an image of the screen.


Edit: I inverted it in PS. Still I would like to know how to do it in KS in order to save the software transition time.

Thanks

[Esben Oxholm]

If you change the bump height to a negative value it will work as is it was inverted.
Cheers,