The Avenger's Age Of Ultron's big draw aka Ironman aka Robert Downey Jr. is requesting his fans to attend the world premiere of Marvel's Avengers: Age of Ultron, and help his charity!!

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

The Avenger's Age of Ultron star 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!!" said the megastar.

Marvel Studios presents 'Avengers: Age of Ultron', the epic follow-up to the biggest Super Hero movie of all time. When Tony Starktries to jumpstart a dormant peacekeeping program, things go awry and Earth's Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance. As the villainous Ultron emerges, it is up to The Avengers to stop him from enacting his terrible plans, and soon uneasy alliances and unexpected action pave the way for an epic and unique global adventure.

Marvel's 'Avengers: Age of Ultron' stars Robert Downey Jr., who returns as Iron Man, along with Chris Hemsworth as Thor, Mark Ruffalo as Hulk and Chris Evans as Captain America. Together with Scarlett Johansson as Black Widow and Jeremy Renner as Hawkeye, and with the additional support of Don Cheadle as James Rhodes/War Machine, Cobie Smulders as Agent Maria Hill, Stellan Skarsgård as Erik Selvig and Samuel L. Jackson as Nick Fury, the team must reassemble to defeat James Spader as Ultron, a terrifying technological villain hell-bent on human extinction. Along the way, they confront two mysterious and powerful newcomers, Pietro Maximoff, played by Aaron Taylor-Johnson, and Wanda Maximoff, played by Elizabeth Olsen and meet an old friend in a new form when Paul Bettany becomes Vision.

Written and directed by Joss Whedon and produced by Kevin Feige, Marvel's 'Avengers: Age of Ultron' is based on the ever-popular Marvel comic book series 'The Avengers', first published in 1963. Get set for an action-packed thrill ride when The Avengers return in Marvel's 'Avengers: Age of Ultron' on April 24, 2015.

Marvel Studios presents 'Avengers: Age of Ultron', the epic follow-up to the biggest Super Hero movie of all time. When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth's Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance. As the villainous Ultron emerges, it is up to The Avengers to stop him from enacting his terrible plans, and soon uneasy alliances and unexpected action pave the way for an epic and unique global adventure.

Marvel's 'Avengers: Age of Ultron' stars Robert Downey Jr., who returns as Iron Man, along with Chris Hemsworth as Thor, Mark Ruffalo as Hulk and Chris Evans as Captain America.

Together with Scarlett Johansson as Black Widow and Jeremy Renner as Hawkeye, and with the additional support of Don Cheadle as James Rhodes/War Machine, Cobie Smulders as Agent Maria Hill, Stellan Skarsgård as Erik Selvig and Samuel L. Jackson as Nick Fury, the team must reassemble to defeat James Spader as Ultron, a terrifying technological villain hell-bent on human extinction. Along the way, they confront two mysterious and powerful newcomers, Pietro Maximoff, played by Aaron Taylor-Johnson, and Wanda Maximoff, played by Elizabeth Olsen and meet an old friend in a new form when Paul Bettany becomes Vision.

Written and directed by Joss Whedon and produced by Kevin Feige, Marvel's 'Avengers: Age of Ultron' is based on the ever-popular Marvel comic book series 'The Avengers', first published in 1963. Get set for an action-packed thrill ride when The Avengers return in Marvel's 'Avengers: Age of Ultron' on April 24, 2015.

Watch ''Avengers: Age of Ultron' Trailer