PHOTOS Meet the 'Star Wars: Episode VII' Cast

The charity campaign, which is organized through the Omaze fundraising platform, will fly one winner and a guest to the Star Wars: Episode VII set in London to meet the cast and get a behind-the-scenes look at the making of the film. The winner will then be transformed into a Star Wars character and appear in the movie.

Donors to "Force for Change" also receive other prizes, depending on the amount they pledge. The campaign raised more than $1 million within the first 24 hours of its launch, an Omaze record, and Disney has committed $1 million to the campaign.

The "Force for Change" initiative raises funds and awareness for UNICEF Innovation Labs and programs that benefit the world's most vulnerable children.

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Fans can enter here for a chance to win a role in Star Wars and get an advance screening of the movie through 11:59 p.m. on Friday.

In the video below, watch Abrams in front of an X-Wing Starfighter announce the chance to win a private screening.