Add a Netapp local user to a CIFS share

I am running Netapp 9.0P3.   I have a need to use a non Active Directory user (local user).   I have defined a local user on the filer.   I go into the Windows Security tab on the share and select Edit to add a new user.   I select the IP address of the filer and enter the local user name but Windows gives me a message the user can not be found.   Does anyone have an idea on how to make this work or if this is possible?   I am working with netapp support but the resource I am working with is unavailable until Monday.   Thanks