[solved] Variable in boot menu

[fred]

Hello,

This is what I have and compil from rom-o-matic and work:

Code:

#!ipxe
dhcp
chain http://192.168.10.118/menu.ipxe
exit

But I want to passing variable in this menu something like:

Code:

#!ipxe
dhcp
chain ${menu-url}
exit

I see the complet menu of robinsmidsrod, and I tried:

Code:

#!ipxe
dhcp
# Global variables used by all other iPXE scripts
chain --autofree boot.ipxe.cfg ||


# Boot <boot-url>/menu.ipxe script if all other options have been exhausted
chain --replace --autofree ${menu-url} ||

And in boot.ipxe.cfg:

Code:

set boot-url http://192.168.10.118/

set menu-url ${boot-url}menu.ipxe

It's not working. Only when I compil this full IP.

I don't understand where is my error? Can you show me the way to work?
Thanks