We are using JIRA+Greenhopper, have about 30 projects and we need to create monthly milestones and weekly sprints. creating this many new versions is cumbersome and we are looking for a way to script this. Jelly scripts can create versions, but cannot set the parent/child relationship or the start and end date. This information can only be entered in Greenhopper planning board -not in the JIRA 'project/manage versions' screen.