Unattend answer file and ComputerName with parameter

Hi all

Windows server 2008R2 in my unattend file, there is ComputerName

and i would like computer name to be random but with letters, like:

ComputerName-XX434XX

Can i do it ? 

will this work ?

<ComputerName>ComputerName-*</ComputerName>

or i need to do :

            <RegisteredOrganization>CompterName</RegisteredOrganization>

            <RegisteredOwner>CompterName</RegisteredOwner>

            <ComputerName>*</ComputerName>

        </component>

Thanks