How to add a label from Netbox Custom fields dict

[Kleinrotti]

How can I add a label for CheckMK if the value is in the field custom_fields as dict from Netbox?
E.g.
custom_fields {'business_owner': 'user1', 'Cost_Center': '12345', 'Criticality': 'Business Critical', 'Justification': 'Nginx Proxy, 'Owner': 'user2', 'technical_owner': None, 'vCenter': 'vcenter1', 'vcenter_persistent_id': '1233445'}

I want the dict entry "Justification" as a label for checkmk.

[Bastian-Kuhn]

Untested, but the Rewrite in the Checkmk should do that:

[Kleinrotti]

Thanks for the help, this worked: {{custom_fields['Justification']}}

[Bastian-Kuhn]

Yes two, sorry my head was in programming, Python Format strings just have one bracket