---
- name: Generate and associate VMID to VM (new method)
  set_fact:
    lab_nodes: |
      [
      {% for lab_node in lab_nodes %}
      {
          "name"           : "{{ lab_node.name                                                }}",
          "vmid"           : "{{ lab_vmid_base           + (loop.index - 1)                   }}",
          "vm_host"        : "{{ lab_node.vm_host        | default(__pve_node)                }}",
          "vm_template_id" : "{{ lab_node.vm_template_id | default(__vm_tmpl_id)              }}",
          "group"          : "{{ lab_node.group          | default(__default_inventory_group) }}",
          "cores"          : "{{ lab_node.cores          | default(__lab_cores_default)       }}",
          "mem"            :  {{ lab_node.mem            | default(__lab_mem_default)         }},
      },
      {% endfor %}
      ]


...