A Singapore real estate fund has asked a South Korean property developer to pay back 11.5 billion won (US$10.1 million) worth of convertible bonds, an official said Friday. Gmcm Real Estate Fund I Pte. Ltd. said it will file a suit against the Dreamhub Project Financing Vehicle Co. unless the company repays the principal and its 5 percent annual interest, said the official of the Dreamhub Project Financing Vehicle.