check-eap-tls

Hi all, I try to use the virtual server 'check-eap-tls', but when I start FreeRadius with '-radiusd -XXXX' I have this error : Wed Aug 17 16:18:39 2016 : Error: /opt/fr3/etc/raddb/sites-enabled/check-eap-tls[63]: Parse error in condition Wed Aug 17 16:18:39 2016 : Error: /opt/fr3/etc/raddb/sites-enabled/check-eap-tls[63]: ("host/%{TLS-Client-Cert-Common-Name}" == &User-Name) { Wed Aug 17 16:18:39 2016 : Error: /opt/fr3/etc/raddb/sites-enabled/check-eap-tls[63]: ^ Cannot use attribute reference on right side of condition I dont understand this error because in mods-enable eap.conf, I un-commented virtual_server = check-eap-tls So normaly, he had acces to this attribute no ? Thanks for ur helps Regards, Thomas