[Moose-dev] Weird behavior of Roassal2 Graph

Hello, I am a bit puzzled by the behavior of Roassal2 using RTGraphBuilder. Inspired by the Agile Visualization Book, I tried some scripts, but I ran into some problems regarding edges. I used this simple script to connect some random dots: nodes := #(one two three four five). b := RTGraphBuilder new. b edges color: Color red; connectFrom: [ :e | nodes atRandom ]. b nodes color: Color gray. b layout grid. b addAll: nodes. b It worked to draw the dots, but it didn't displayed any edge. The weird thing is that if I put integers or characters inside nodes, it works correctly. Example -- this works: nodes := #(1 2 3 4 5 6). b := RTGraphBuilder new. b edges color: Color red; connectFrom: [ :e | nodes atRandom ]. b nodes color: Color gray. b layout grid. b addAll: nodes. b Am I doing something wrong? Thanks, Tommaso