Creating custom Naming Formats using employeeID

Creating custom Naming Formats using employeeID

I need to create a New User Template that uses a Naming Format where the sAMAccountName is composed of the first name initial plus the lastname initial plus the employee ID (see first image below).
 
I have tried the following three strings:
%givenName%1[L]%sn%1[L]%employeeID%
%givenName%1[L]%sn%1[L]%Employee-ID%
%givenName%1[L]%sn%1[L]%employeeNumber%
 
Neither of these do the trick, the Logon name does not populate with the employeeID (see second image below).
 
I'm assuming this is because the system does not support the LDAP headers employeeID and employeeNumber but I thought I'd throw out a line and double-check.
 
If this is the case, I would like to officially request that this be added in a (near) future release.
 
-----------------------------------------------------------------------------------
-----------------------------------------------------------------------------------

                  New to ADSelfService Plus?