How to create a playlist?

Trying this, and it doesn't do anything

function createRow(list as object, num as Integer)
  print "Parser.brs - [createRow]"
  Parent = createObject("RoSGNode", "ContentNode")
  row = createObject("RoSGNode", "ContentNode")
  row.Title = list[num].Title

  fullRow = []
  for each itemAA2 in list[num].ContentList
    item2 = createObject("RoSGNode","ContentNode")
    AddAndSetFields(item2, itemAA2)
    fullRow.push(item2)
  end for

  for each itemAA in list[num].ContentList
    item = createObject("RoSGNode","ContentNode")
    AddAndSetFields(item, itemAA)
    for each childRow in fullRow
      item.appendChild(childRow)
    end for
    row.appendChild(item)
  end for

  Parent.appendChild(row)
  return Parent
end function

and then in the details screen: 

<Video
      id="VideoPlayer"
      visible="false"
      translation="[0, 0]"
      width="1920"
      height="1080"
      contentIsPlaylist="true"
      />

and the play button doesn't work.  it throws an error saying "No streams were provided for playback", but i'm sure a video uri is being passed in.