endand accessing the user session by calling .fPrgCtx.USession(). Although,comparing a value to '?' is essentially the same as using the IsDefined()function.Good luck, chris----- Original Message -----From: "eLink Discussion: Development Discussion"To: "eLink Recipient" Sent: Thursday, September 19, 2002 7:00 PMSubject: tips to resolve a problem> tips to resolve a problem> Posted by LeMerUser2 on 09/19/2002 12:49 PM>> I have an error when i am executing this instruction :>> ;If str.lower(.fFuncPrefix)<>'admin' &&str.string(.fPrgCtx.fUSession)<>'?'>> Debugger tells me that a function is not defined. What is this function?how can i resolve it ?>> [To reply to this thread, use your normal e-mail reply function.]>> ============================================================>> Discussion: Development Discussion>https://knowledge.opentext.com/knowledge/livelink.exe?func=ll&objId=786303&objAction=view>> Livelink Server:> https://knowledge.opentext.com/knowledge/livelink.exe>>>