[OpenSER-Users] How to get a substring?

Hi... I am using the openser 1.1.0 and I would like get a substring of FROM... For example, I have the code in my script: ---------------------------------------------------------- avp_write("$fU","$avp(s:777)"); avp_print(); ---------------------------------------------------------- And it shows in the log: ---------------------------------------------------------- 5(6249) INFO:                  name=<777> 5(6249) INFO:                  val_str=<4830353131 / 10> ---------------------------------------------------------- Is possible I get only the first and the second char (in this case is 48) of $fU??? Are there some way? Thanks..... Novos endereços, o Yahoo! que você conhece. Crie um email novo com a sua cara @ymail.com ou @rocketmail.com. http://br.new.mail.yahoo.com/addresses