iser:
      description: 'High performance block storage: Cinder volumes over iSER protocol
        (iSCSI over RDMA). This feature requires SR-IOV capabilities in the NIC, and
        will use a dedicated virtual function for the storage network.'
      label: iSER protocol for volumes (Cinder)
      restrictions:
      - settings:storage.volumes_lvm.value != true or settings:common.libvirt_type.value
        != 'kvm'
      type: checkbox
      value: true
      weight: 11
    metadata:
      label: Storage
      weight: 60

##</code><code>##

my $yaml_hash_ref = YAML::XS::LoadFile($test.yaml);
$yaml_hash{editable}->{storage}->{iser}->{value} = $use_iser_protocol; # whatever i put here i get error cannot modify readonly.
YAML::XS::DumpFile("$tmp_file",$yaml_hash_ref);