MS Dhoni appreciated the hard work put in by actor Sushant Singh Rajput during the making of M S Dhoni: The Untold Story but the cricketer faced one big problem. "The biggest problem was that he used to ask a lot of questions. It was of course to get into the skin of the character but the questions kept on coming, one after the other," Dhoni said. "I just wanted to understand him better," clarified Sushant. Directed by Neeraj Pandey, M S Dhoni: The Untold Story is set to hit the screens on September 30.