Board Thread:General Discussion/@comment-24498131-20140304205954/@comment-1853435-20140305232708

The quest ID is listed at the very bottom of the info box on the quest page, see the page for With Friends Like These as an example. The missing parameter is the quest stage, each quest has a series of stages and you need to enter the stage you want to complete. as in: SetObjectiveCompleted  <1>. To get all the stages for a particular quest type in:  player.sqs. You can find all this info on the console commands page here.