Change pattern of username creation

Hi everybody !

when i create a new domain in Virtualmin in auto he create
user-> domain
and so on…

is possible to change it making it like

user ->
mysql-> Sql12345
database name= 12345


try looking under System Settings -> Virtualmin Configuration -> Defaults for new domains

look also under Server Templates -> Default Settings -> MySQL database

yes but im forced to use the same var like ${DOM}
i would like to use random numeric value…is it possible ?