Adding Custom Attributes to ADManager Plus

Adding Custom Attributes to ADManager Plus

I am trying to add the 4 new attributes added in 2008 R2

msDS-FailedInteractiveLogonCount—The number of failed logon attempts at a Windows Server 2008 server or a Windows Vista workstation since the last interactive logon feature was enabled

msDS-FailedInteractiveLogonCountAtLastSuccessfulLogon—The total number of failed interactive logons up until the last successful Ctrl-Alt-Del logon

msDS-LastFailedInteractiveLogonTime—A time stamp of the last failed logon attempt

msDS-LastSuccessfulInteractiveLogonTime—A time stamp of the last successful logon attempt at a Windows Server 2008 server or a Windows Vista workstation

I can add 3 of the 4 but when I try and add msDS-FailedInteractiveLogonCountAtLastSuccessfulLogon I get an error.

Is there a limit to the length of the name of the ad LDAP attribute name?

Kevin