Chennai, Aug 29 (IANS) Actor-filmmaker Kamal Haasan, who has been recovering from a leg injury, has started working on his upcoming trilingual comedy "Sabash Naidu". He says he's happy with the progress and thanks well-wishers and physiotherapists.

"Started paper work again on Kundu/Naidu. Walking now. Ready to run show again. Mind is flying, gaining altitude. Good enough a progression," Haasan wrote on Twitter.

In July, Haasan slipped and fell from his office stairs, resulting in two fractures on his leg. After spending nearly a month in the hospital, he was discharged.

Haasan is playing the lead as well as directing "Sabash Naidu", which is simultaneously being shot in Telugu and Hindi.

A spin-off based on the character Sabash Naidu from Tamil action-comedy "Dasavathaaram", the project also stars Shruti Haasan, Ramya Krishnan, Brahmanandam and Saurabh Shukla.