Group layers using layerlist widget

[LefterisKoumis]

I am using the custom widget layerlist and I am trying to group layers. I already grouped the layers in ArcMap, as you can see in the services directory screenshot. However, wab lists the layers and not in group (last screenshot). Any ideas? Thank you.

Services Directory

[LefterisKoumis]

You are correct. I saw that reference before but could not find the "layer.url". I just realized that I was looking at the layerinfo.js instead of layerinfos.js

THank you.