Friends, I'm trying to search in the LDAP for a null value of an attribute (in this case suborder). Therefore I need to construct a filter string for the same which as constructed below String filter = "(suborder=null)"; But this contsruct does not work though and I dont get the correct result though I have null values for that suborder. Would anybody here enlighten me on the correct construct for search in LDAP for null values Thanks, P- __________________________________________________ Do You Yahoo!? Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html