Documentation:Logged in Person presentation

The Main menu shows the logged in user’s username (SysUser). This has now been extended so that you can show other information for the user by setting the DefaultStringRepresenation of the SysUser in the model.

If you have this:

if self.Person->isempty then
  self.UserName
else
  self.Person.FirstName+' '+self.Person.LastName+
  if self.Person.House->isempty then
    ''
  else
    ' i hus '+self.Person.House.Name
  endif
endif

You get this: