my expert adviser has expired on particular date how can i remove the expiriation

i have an expert adviser ,its giving buy and sell signal , it expired on particular date ,after the expiry date its not work .how can i remove the expiry date from the expertadviser.......pls.help any body...........,

post your expert adivsor to my mail id I can rectify it.
boopathyk@ y a h o o. c o m (remove space)