I have a composite step that needs to do something a couple of times, let's say with a parameter p=A, p=B and p=C. Sometimes during execution of a build, I need to also add p=D dynamically. I store the list in a variable, say 'list_p=A,B,C' and when I need D, I simply set the var to 'list_p=A,B,C,D'. The problem is, the composite step doesn't notice this change. It looks like repeat parameters are evaluated at the start of executing of configuration and not at the latest possible time, ie. when the composite step starts executing.