Actress Denise Richards is "disgusted" with ex-husband Charlie Sheen's plans to take her to court over parental rights of their two children, insisting he is simply acting out of spite. The Platoon star wants more relaxed visitation rights with his daughters Sam, three, and two-year-old Lola, as he is currently only allowed to spend time with them under supervision. But Richards is furious with the timing of Sheen's legal action. She tells the New York Post's gossip column Page Six, "This is disgusting. He is doing this now because he's not happy with me and the custody arrangement. "My mom is going through chemotherapy and I asked Charlie if my mom could see the kids before she got really sick. That's a valid request. He doesn't stick to the schedule he has with the kids - that's not my fault." Richards and Sheen divorced in November 2006 after a turbulent three-year marriage. The actor is now set to wed 29-year-old real estate investor Brooke Mueller.