Here's a quick snippet I wrote to sample/display these kinds of things (C2 was interested in this one)
set #LPC 100
gosub showEUOMenu1
set %containers
repeat
  set %sample_container #CONTNAME
  set %sample_id #CONTID
  set %sample_contsize #CONTSIZE
  if %sample_container , %sample_contsize notin %containers
  {
    set %containers %containers , _ , %sample_container , %sample_contsize
    menu list add EUOListBox1 %sample_container , _ , %sample_contsize , _ , %sample_id
  }
until #FALSE
;--------- EasyUO Menu Designer Code Begin ---------
sub showEUOMenu1
	menu Clear
	menu Window Title TMs CONTAINER/SIZE sampler
	menu Window Color BtnFace
	menu Window Size 322 271
	menu Font Transparent #true
	menu Font Align Right
	menu Font Name MS Sans Serif
	menu Font Size 8
	menu Font Style
	menu Font Color WindowText
	menu Font BGColor Window
	menu List Create EUOListBox1 12 12 281 249
	menu Show 421 270
return