Project having collection of tasks and I want to pull all tasks where milestoneID is not null under project.

Thanks for reply...My requirement is to pull all projects details along with its associated tasks and where milestoneID is not null.

HI Team,How can we use filter on child level object using WF api call. like project have task collection and need a filter on tasks:milestoneIDI am using below code:/attask/api/v19.0/PROJ/search?ID=XXXXX&fields=tasks:milestoneID&tasks:milestoneID_Mod=notnullresult is i m getting all the tasks list f...