Add an image on a curved surface VRay Rhino V5

Hi All. I have been working with Rhino V5 for sometime now. My concern is how to wrap a label ( as in a sticker) onto a cylinder e. a bottle or pipe. I tried every way possible but couldn’t get it. Any help in this regard would be highly appreciated.

This image is from the help file on decals.
Read all about it here:

I would cut out the label surface and place it a little bit above the glass. Than assign the texture to the label. If it doesn’t match it should help to _unpacktexture and _ShrinkTrimmedSrf. The basic UV of the label surface should do the job.