Nadia Tass will direct a $ A10 million ($ 7 million) biopic of Australian sporting legend Hubert Operman.Emulating the backers of the Paul Hogan pic “Lightning Jack,” the producers aim to raise the budget via a stock market offering due out before June. Tass, whose credits include “Malcolm,”"The Big Steal” and Universal’s “Pure Luck,” categorizes the untitled pic as a “rags to riches” tale about a postal delivery boy who became a world champion long-distance cyclist in the 1920s and 1930s. Tass has launched a search internationally and in Australia for a “young, fresh-faced” actor to play Operman. Now Sir Hubert Operman, and aged 89, he and Maya, his wife of 65 years, attended a reception in Melbourne Wednesday to announce the film. It will be produced by Tass and husband David Parker’s company, Cascade Films , and Lyons-Sinclair Pictures. Script is co-written by Parker (who’ll also serve as director of photography) and Peter Yeldham.