Hi! Wrong usage of RTGroup :-) You need to have "view addAll: group.” and _not_ “view add: group” Maybe you want to add a signalUpdate in the callback. Your script should be: -=-=-=-=-=-=-=-=-=-=-=-= | view | view := RTView new. menuBuilder := RTMenuBuilder new view: view. menuBuilder menu: 'Click Me' background: Color gray callback: [ view clean. view signalUpdate ]. group := RTGroup new. (1 to: 10) do: [:each| group add: ((RTBox new borderColor: (Color green); elementOn:each) @ RTDraggable; +(RTLabel new color: (Color red); text: each asString; yourself))]. view addAll: group. RTVerticalLineLayout on: view elements. view open. -=-=-=-=-=-=-=-=-=-=-=-= Cheers, Alexandre On Jun 6, 2014, at 7:05 PM, Usman Bhatti <usman.bhatti(a)gmail.com> wrote: script: green); elementOn:each) -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. _______________________________________________ Moose-dev mailing list Moose-dev(a)iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev