NEW DELHI: Ironman Robert Downey Jr has appealed to his fans to attend the world premiere of Marvel's Avengers: Age of Ultron, to help his charity, which helps children suffering from terminal diseases. 

His post on his Facebook page is imploring fans to donate for such children with a charity event that is supporting Julia's House, a hospice that provides care and support for life-limited children and their families.

Downey Jr reached out to his fans on social media saying, “Hi folks, here’s the skinny: we’ve raised $1.3 MILLION for kids with terminal diseases. That’s incredible, but I think we can do better. Our goal is to reach $2M to help build a brand spanking new wing for Julia’s House. There’s just one week left to enter to win the chance to go to the premiere of Marvel’s Avengers: Age of Ultron with me. Click the pic and assemble!”

Written and directed by Joss Whedon and produced by Kevin Feige, Marvel’s Avengers: Age of Ultron is based on Marvel comic book seriesThe Avengers, first published in 1963. The movie is set for release on 24 April.

Avengers: Age of Ultron stars Downey Jr. along with Chris Hemsworth, Mark Ruffalo, Chris Evans, Scarlett Johansson, Jeremy Renner, Don Cheadle, Cobie Smulders, Stellan Skarsg?rd, Samuel L. Jackson, James Spader, Aaron Taylor-Johnson, Elizabeth Olsen and Paul Bettany.