Jinja in Day2 operation request

[VladoPortos]

Hello,

I'm slowly figuring most of the stuff up but got stuck on one issue. I have a day 2 operation. Update, that I want to limit to the instance parameter. But when I put in

"Default limits" a {{ request.instance.admin_spec.hcloud_server_name }}
I get error in log: response was :{"limit":["Not a valid string."]}

But in the instance Admin spec is:

{
    "hcloud_server_id": "106853707",
    "hcloud_server_name": "poc-vm",
    "hcloud_ipv4": "65.107.212.205",
    "location": "hel1",
    "server_type": "cpx11",
    "image": "ubuntu-24.04",
    "labels": {
        "env": "poc",
        "role": "generic"
    },
    "firewall_name": "awx-custom1",
    "ssh_key_name": "vladoportos"
}

and I would love to have the limit contain hcloud_server_name as it goes to AWX for execution.

I'm pretty sure that I just doing something basic wrong. Could you guys help ? Thanks.

[VladoPortos]

I'm not sure what I'm doing wrong :(

I tried:

{{ '' ~ request.instance.spec.hcloud_server_name }}
or
{{ request.instance.spec.hcloud_server_name | string }}
or
{{ request.instance.spec.hosts | join(',') }}

Always fails with:

ERROR 2025-08-18 10:39:59,383 job Error launching job Hetzner VM Install Docker, response was :{"limit":["Not a valid string."]}

Looks like despite the tooltip saying:
"Jinja supported with context {{ request }}. Comma separated list of inventory host limits" its never rendered, I can see it in the message even later

 ......'credentials': None, 'job_tags': None, 'skip_tags': None, 'limit': ['{{ request.instance.spec.hcloud_server_name | string }}'], 'verbosity': None, 'job_type': None, 'diff_mode': None}