Dynamic Style background-image class - not displaying

[Teodor]

If you want to use a dynamic value, then follow what's exaplained here:

How to set a dynamic background image

There is a dynamic attribute called style, which can be used for this - apply it on your container directly. It will produce code like: dmx-style:background-image="'url(/path/to/images/' + dynamic_value + ')'"

Otherwise for static image, just use the design panel.