How to add attributes of other entities in a custom command?

Hi All,

Is there a way to add attributes from other entities which is part of the projection as custom command parameters?

Eg:

We need to create ExecuteAction custom command in Document Revision Header which needs some attributes in Document Title which is a tab of Document Revision screen.

In the parameter mappings, it shows only attributed in DocIssue entity. Is there a way to do that?