Does Metadata work with Appfire's Comala Document Management Data Center (formerly Comala Workflows)?
Short answer
Metadata values can be used as Value References by the Comala Document Management app.
For details on how to access and integrate Metadata for Confluence in Comala Document Management, refer to the official Appfire documentation:
Can Comala change Metadata values?
It is currently not possible to change Metadata values via Comala Document Management.
This limitation is tracked as a potential new feature:
Source
Does Metadata work with appfire's Comala Document Management Data Center (formerly Comala Workflows)