Show id is the list

hello everyone

i am trying to show the id on the page

shortcode as [pdb_list Field=”id,firstname,lastname”

i am getting results as
===================================
RecordID===firstname===lastname
===================================
firstname===lastname===
firstname===lastname===
firstname===lastname===
===================================

record field is not showing the record ids instead it showing first name and last name only

any shortcode for this or any help appreciated

thank you have a nice day

http://wordpress.org/plugins/participants-database/