Metadata variables are custom fields that you can create on FortiManager to store additional information about objects or devices. They can be used as variables in Jinja2 CLI templates or scripts to apply configurations to multiple devices or objects. They do not apply only to non-firewall objects, but also to firewall objects such as addresses, services, policies, etc. The metadata format is not $<metadata_variable_name>, but @<metadata_variable_name>@. Reference := Using meta field variables, Metadata Variables are supported in Firewall Objects configuration, Technical Tip: New Meta Variables and their usage including Jinja Templates, Technical Tip: Firewall objects use as metadata variable