Node Renumbering

Hello! I wonder if it is possible to change node numbering once mesh is generated. I’ve tried to go to Utilities->Renumber but node numbers do not change.
Thanks in Advance

In geometry view Utilities->Renumber try to renumber the geometrical entities avoiding holes in its numeration.
If there are no jumps in the numeration then ids won’t change.

In mesh view Utilities->Renumber try to renumber mesh entities. entities (nodes and elements) try to renumber avoiding holes,
and also the nodes are renumbered with another extra ordering criteria, depending on the GiD Variable ‘RenumberMethod’ value
http://www.gidhome.com/documents/referencemanual/GENERAL%20ASPECTS/Utilities%20Menu/Renumber%20(only%20Preprocessing)

How can I change the value of this variable?

read this:
http://www.gidhome.com/documents/referencemanual/GENERAL%20ASPECTS/Utilities%20Menu/Preferences

Thank you very much! It has been very useful for me! Just one more question. Is it possible to start node numbering in number one?

GiD entity ids already start by 1 at leas at level user (some scripting level commands could start by 0)

Thanks escolano. That helped!