How can we scale minio cluster disks by this ansible for an already running cluster?

[hosnas]

my variable is like this:

minio_server_datadirs: [ "/mnt/minio1", "/mnt/minio2" ]
minio_server_cluster_nodes:
  - 'http://server1/mnt/minio1'
  - 'http://server1/mnt/minio2'
  - 'http://server2/mnt/minio1'
  - 'http://server2/mnt/minio2'

and then I want to scale to this

minio_server_datadirs: [ "/mnt/minio1", "/mnt/minio2", "/mnt/minio3", "/mnt/minio4" ]
minio_server_cluster_nodes:
  - 'http://server1/mnt/minio1'
  - 'http://server1/mnt/minio2'
  - 'http://server1/mnt/minio3'
  - 'http://server1/mnt/minio4'
  - 'http://server2/mnt/minio1'
  - 'http://server2/mnt/minio2'
  - 'http://server2/mnt/minio3'
  - 'http://server2/mnt/minio4'

but the second stage doesnt work