Adding permissions with rhevm-shell

The RHEV 3.1 Command Line Shell Guide provides the following example for adding a permission with rhevm-shell:

[RHEVM shell (connected)]# add permission --vm-identifier MyVM1 --role-id MyRole --user-id jsmith

When I run that command, the response is the following:

error: 
status: 400
reason: Bad Request
detail: 
Invalid UUID string: jsmith

It seems that a UUID for the role and a UUID for the user is required to add a permission. 

I can query the UUID for the role with the following command:

show role MyRole

It took me more than one command to get the UUID from a users name with rhevm-shell.  First, I  queried users by first name with the following command:

list users --name Jane

This will provide a list of UUIDs with that first name.  Then, I can query the last_name and the user_name for each user with the following command:

show user UUID

With the UUID for the role and the UUID for the user, I was able to add the permission to the VM.