[Serusers] does anybody used "is_user()" method in ser.cfg before??

Hello Everybody, is_user("username") method is used to check if the username in the parameter matches the username in credentials, i.e. username in Proxy-Authorization header field. SER document explains its functionality as: Check if the username in credentials matches the given username. Since username in credentials is authenticated, I want it to be same with the one written in "From" field. But I could not find a way to compare them in ser.cfg. Did anybody try it before? Is there a way to compare the username of "From" field with the one in "Proxy-Authorization" field? Thanks in advance.. Regards Tulay Sazak ______________________________________________________ Click here to donate to the Hurricane Katrina relief effort. http://store.yahoo.com/redcross-donate3/