What is the problem with bump ?

Hello.
Since I installed the plugin for sketchup I'm facing trouble with bump maps.
It doesn't take any great effect , I have to twist the uv around and scale the image .... Anyway, when I was using only the stand alone version everything was perfect .... I was just placing the image on my geometry and using a grayscale image for bump ....no scaling no twisting ?
Maybe I'm doing something wrong ? Is there any tutus About octane for sketchup ?
Thanks
Since I installed the plugin for sketchup I'm facing trouble with bump maps.
It doesn't take any great effect , I have to twist the uv around and scale the image .... Anyway, when I was using only the stand alone version everything was perfect .... I was just placing the image on my geometry and using a grayscale image for bump ....no scaling no twisting ?
Maybe I'm doing something wrong ? Is there any tutus About octane for sketchup ?
Thanks