# usage of Vielbein

Hello,

When I try to use a Vielbein in cadabra2 I get the following error:

h^{m}_{\mu}::Vielbein.


Traceback (most recent call last):
File "<string>", line 11, in <module>
NameError: name 'Vielbein' is not defined


Does anybody have experience with this?

Thank you,

Asier

Vielbein is not in 2.x yet, but it has been added to my development branch so it will appear in the next few days.