diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index 3c063b827..9d30e7227 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -276,7 +276,7 @@ nodegroup => {
   groupname => 'Name of the group.',
   grouptype => 'The only current valid value is dynamic.  We will be looking at having the object def commands working with static group definitions in the nodelist table.',
   members => 'The value of the attribute is not used, but the attribute is necessary as a place holder for the object def commands.  (The membership for static groups is stored in the nodelist table.)',
-  wherevals => 'A list of comma-separated "attr=val" pairs that can be used to determine the members of a dynamic group.',
+  wherevals => 'A list of "attr*val" pairs that can be used to determine the members of a dynamic group, the delimiter is "::" and the operator * can be ==, =~, != or !~.',
      comments => 'Any user-written notes.',
      disable => "Set to 'yes' or '1' to comment out this row.",
  },