I'm trying to find a setstage number for Agent of Righteous Might. I've got the quest ID from the walkthrough, MQ06 and type the following into the console:

player.sqs MQ06

but I just get the error message:

Item MQ06 not found for parameter quest - Compiled script not saved

Anyone have any idea what I'm doing wrong?

Is this a mod or a vanilla quest? Are you sure you have the console command right?

Anyway, AFAIK the only way to find the stage numbers and quest IDs for mod-added quests is to open up the ESP in either the CK or TES5Edit