Actor Ram Charan has said he is not sure if he will play a role in his father megastar Chiranjeevi's yet-untitled 150th film which is currently on the floors."I'm not sure if I'll be part of the film because I'm already associated with the project as producer. If director Vinayak and my dad really want me to be part of the film, I might probably feature in a song," Ram Charan said in a Facebook live chat with his fans.Busy shooting for upcoming Telugu thriller "Dhruva", Ram spared 15 minutes from his busy schedule to chat live with his fans on Thursday evening.He also revealed that his father's project, which is a remake of Tamil blockbuster "Kaththi", will hit the screens early next year."We are planning to release the film in January next year. Contrary to rumours, the film's title is not yet locked," he said.Ram also said he would love to work with his uncle Pawan Kalyan. However, only when an interesting script comes their way.