Flow io.cloudslang.vmware.vcenter.virtual_machines.clone_virtual_machine cannot create VMs in sub-folders

[pe-pan]

I've got a vCenter instance with following folder structure:

/capa1                               - vCenter instance
  /CAPA1 Datacenter                  - datacenter
    /Students                        - root folder
      /Petr                          - sub-folder

When I execute the following code, the operation succeeds and the VM is created in Students folder.

namespace: io.cloudslang.demo
imports:
  base: io.cloudslang.base
  vm: io.cloudslang.vmware.vcenter.virtual_machines
flow:
  name: deploy_tomcat
  inputs:
    - hostname
    - username
    - password
    - image: "Ubuntu"
    - folder: "Students"
  workflow:
    - uuid_generator:
        do:
          base.utils.uuid_generator:
        publish:
          - uuid: '${new_uuid}'
        navigate:
          - SUCCESS: trim
    - trim:
          do:
            base.strings.substring:
              - origin_string: '${"petr-"+uuid}'
              - end_index: '13'
          publish:
            - id: '${new_string}'
          navigate:
            - FAILURE: FAILURE
            - SUCCESS: clone_vm
    - clone_vm:
        do:
          vm.clone_virtual_machine:
            - host: '${hostname}'
            - hostname: 'trnesxi3.eswdc.net'
            - clone_host: 'trnesxi3.eswdc.net'
            - clone_data_store: 'datastore2'
            - username: '${username}'
            - password: '${password}'
            - data_center_name: 'CAPA1 Datacenter'
            - is_template: 'false'
            - virtual_machine_name: '${image}'
            - clone_name: '${id}'
            - folder_name: '${folder}'
        navigate:
          - FAILURE: FAILURE
          - SUCCESS: SUCCESS
  results:
      - FAILURE
      - SUCCESS

When I change the folder parameter into "Students/Petr", the flow fails on this error: error_message=java.lang.RuntimeException: Cannot find the specified folder.

The same happens when I set the folder parameter into "Students\Petr".