Home directory upper/lower case

Hello,

i configured the ldap authentication and it's working fine.

for home directory i create a personal folder for each user depending of the login with %USER% variable  (/data/ICS/users/%USER%)

but as authentication works with lower and upper case for the login it creates 2 differents home folder for the same user.

is it possible to force case for home directory? or is there an other variable than %USER% that i can use who always use the same case?

Thanks
REgards

Simon