Hi, We are currently using seaside, magritte, reef etc to do a project at school. We also have to do a mobile app (written in Java :(), so we are doing a REST service to access the database from the mobile app. We are working on Pharo 50, and we noticed that Seaside-REST is not working anymore. For simple get, it is ok, for example : test <get> ^ 'foo' but if you want to have a complete path like that : test: aValue <get> <path: '/foo?value={aValue}'> ^ 'foo' You get a DNU RBVariableNode>>key during the route creating (Same on pharo 40 is working). Any idea why ? In the meantime, we are using Teapot, it seems to be working on Pharo 50. Btw, I cannot subscribe to seaside mailing list (I never get the confirmation mail), so if someone could forward this email on seaside mailing list, it would be nice. Franck