Charlie Sheen is hoping to convince a Los Angeles judge to end his child support payments to his ex-wife Brooke Mueller by using his former TV co-star Jon Cryer's previous court victory as a legal precedent. The star recently filed a request to halt his monthly installments of $55,000 (£35,484) to Mueller - because his four-year-old twins, Bob and Max, are no longer living with their mother. The boys were removed from her home by child welfare officials in May (13), following concerns the troubled ex Mrs. Sheen was using drugs again. The former real estate agent has since attempted to kick her longterm struggles with substance abuse by checking into a rehabilitation centre, where she remains under doctors' supervision, and Sheen's second wife, Denise Richards, has been taking care of the boys. In a bid to bolster his case, Sheen has made reference to his former Two and a Half Men colleague Cryer's court fight with British actress Sarah Trigger, who he divorced in 2004. Trigger was arrested in 2009 amid allegations of child abuse and temporarily lost custody of their son, ironically named Charlie. Cryer used her legal woes to request his support payments be reduced from $10,000 per month to zero - and the judge agreed. Sheen claims Cryer's win set a precedent and he wants the judge overseeing his case to deliver a similar verdict, reports TMZ.com. Sheen's court documents also reveal that he earns more than $740,000 (£477,419)-a-month before taxes, and already handles all expenses for his boys, which amount to an estimated $30,000 (£19,355)-a-month, on top of the child support fees. The actor feared Mueller was using the child support money to foot the cost of her own drug treatment.