sentences:  His transition from playwright to screenwriter happened when he wrote the dialogues for Rajkumar Santoshi's 2001 film "The Legend of Bhagat Singh", which was inspired in part by Mishra's critically acclaimed play on Bhagat Singh – "Gagan Damama Bajyo".It won him the Zee Cine Award for Best Dialogue (2003).Meanwhile, he moved to Mumbai in November 2002, where he went on to establish a career as a film lyricist, screenwriter and as an actor.