Something wrong with the example couchbase-cli user-manage

I want to create a RBAC user using the command as follow:

couchbase-cli user-manage
-c localhost
-u admin
-p 123456
–set
–rbac-username jdoe
–rbac-password cbpass
–rbac-name “John Doe”
–roles bucket_admin[*],ro_admin
–auth-domain local

However, it gives me an ERROR: “Cannot assign roles to user because the following roles are unknown, malformed or role parameters are undefined: [bucket_admin[*]]”.

Reporter: c060604
E-mail: c060604@gmail.com