I am using following syntax as mentioned in dev.otrs.org to update Customer

$CustomerUserObject->CustomerUserUpdate(

        Source        => 'CustomerUser', # CustomerUser source config

        ID            => 'mh'            # current user login

        UserLogin     => 'mhuber',       # new user login

        UserFirstname => 'Huber',

        UserLastname  => 'Manfred',

        UserPassword  => 'some-pass',    # not required

        UserEmail     => 'email@example.com',

        ValidID       => 1,

        UserID        => 123,

    );

Unfortunately, I am not able to update customer.

I would like to know the values that I should enter in these fields

ID, and UserID

Thanks,

Jignesh