Passing "--extra-property" to openstack network rbac fails with error 400

I run
openstack network rbac create --debug --project demo --action access_as_shared --target-project 'demo' --type network --extra-property name='request',value='john' 'private'.

The result was the following:
RESP BODY: {"NeutronError": {"type": "HTTPBadRequest", "message": "Unrecognized attribute(s) 'request'", "detail": ""}}

It doesn't look like proper format was used
  --extra-property type=<property_type>,name=<property_name>,value=<property_value>
                        Additional parameters can be passed using this property. Default type of the extra property is string ('str'),
                        but other types can be used as well. Available types are: 'dict', 'list', 'str', 'bool', 'int'. In case of
                        'list' type, 'value' can be semicolon-separated list of values. For 'dict' value is semicolon-separated list
                        of the key:value pairs.

Hi,

What would be the correct syntax in this case ? I review my command and tested it again with same error message.

---
$ openstack --version
openstack 8.2.0

$ openstack network rbac create --project myproject --action access_as_shared --target-project random_project --type network --extra-property str='str',name='request',value='ticketnumber' 'my_private_project'

RESP BODY: {"NeutronError": {"message": "Unrecognized attribute(s) 'request'", "type": "HTTPBadRequest", "detail": ""}}

BadRequestException: 400: Client Error for url: https://api-emea-west-pdc-z01.cloud.ubisoft.com:9696/v2.0/rbac-policies, Unrecognized attribute(s) 'request'
---