Using cron-executed VBO nodes list to update workflow with Rules not possible?

I have nodes with workflow field which I need to update using cron from one state to another state. I built a VBO view and tried to use that list as source to which nodes to update. I do not seem to have a way to choose workflow field in Rules at all.

Exported rule below here is not saveable, since "entity-fetched:field-myworkflow" is not exposed at all. Node author (entity-fetched:author) does have fields, but top-level entity does not.

{ "rules_update_wf_state" : {
    "LABEL" : "Update Workflow State",
    "PLUGIN" : "reaction rule",
    "OWNER" : "rules",
    "REQUIRES" : [ "views_bulk_operations", "rules", "workflow_rules" ],
    "ON" : { "cron" : [] },
    "IF" : [
      { "views_bulk_operations_condition_result_count" : { "view" : "nodes_for_rules_cron|default", "minimum" : "1" } }
    ],
    "DO" : [
      { "views_bulk_operations_action_load_list" : {
          "USING" : { "view" : "nodes_for_rules_cron|default" },
          "PROVIDE" : { "entity_list" : { "entity_node_list" : "A list of entity objects" } }
        }
      },
      { "LOOP" : {
          "USING" : { "list" : [ "entity-node-list" ] },
          "ITEM" : { "list_item_node" : "Current node" },
          "DO" : [
            { "entity_fetch" : {
                "USING" : {
                  "type" : "node",
                  "id" : [ "list-item-node:nid" ],
                  "revision_id" : [ "list-item-node:vid" ]
                },
                "PROVIDE" : { "entity_fetched" : { "entity_fetched" : "Fetched entity" } }
              }
            },
            { "workflowfield_field_set_state" : {
                "node" : [ "entity-fetched" ],
                "field" : [ "entity-fetched:field-myworkflow" ],
                "workflow_state" : { "value" : { "4" : "4" } },
                "workflow_comment" : "Automatically updated state."
              }
            }
          ]
        }
      }
    ]
  }
}