Error trying changing password from CLI on iDRAC 9 env.

Hello all. I need change the password of a user from CLI on iDRAC9 environment. My first action is: racadm get iDRAC.cfgUserAdmin.2.cfgUserAdminUserName the second action would be something like: racadm set .cfgUserAdmin.2.cfgUserAdminPassword newpassword but I get this error: ERROR: SWC0244 : Invalid Fully Qualified Device Descriptor (FQDD). How can I know the correct FQDD? ps: Note: I don't use "racadm config" as it is deprecated. Thank you Daniel