[ovirt-devel] create a host using ssh

I am writing a script to create a host using public ssh key the function I am using is add_using_ssh: my ssh_key is a an Ssh type already ssh_key = types.Ssh(public_key=my_ssh_key_string) host = hosts_service.add_using_ssh( types.Host( name=name, description='', address=address, root_password=None, port=22, ssh=ssh_key, cluster=types.Cluster( name=cluster, ), ), ) When I choose from GUI, it doesn't ask me to put in root password, so I set it as None (Not sure if this is correct) I got error: ovirtsdk4.Error: Fault reason is "Request syntactically incorrect.". Fault detail is "For correct usage, see: ovirt-engine/apidoc#services/hosts/methods/add". HTTP response code is 400. looks like I didn't get all the parameters assigned? Can anybody help with this?