KAMIZAKI,
It looks like you are mostly there. In the data set, what does your code look like for calling the image file? Are the images stored in the media library?
Update: If you are trying to use images from the media library, that is not supported yet (CMS 1.7.3). Please see here , and here. So the images must be external and called with a correct html image tag or via css. Since you are using data sets I would think it easiest to use css. Something like “background-image: url([bgImagePath|1]);” should work if the column name is “bgImagePath”. And in the dataset the column bgImagePath was set to something like “http://www.server.com/path_here/image.jpg”.