script? when blank entry required?

OK So far so good I’m creating a Default for installation via Netinstall, Part of which I want to set a password for the Admin login, I’ve successfully created a user login on a specific user group and set a password for it.

However I’m failing dismally to set or change the password for admin, which if I do nothing is blank, ie I can login under admin with no password

This line has failed for me what am I doing wrong?

/
password new-password=nuts confirm-new-password=nuts old-password=“”

Regards

Olly