EA Relationship Matrix: No Model Search in "Matrix Specification" artifact?

[EAabecedarian]

EA 15.2:
To trace requirements, I'd like to use a Relationship Matrix.

When I open the Matrix, I can manually modify Source or Target to perform a Model Search on, for instance, a predefined Search pattern from "My Searches".
So I can have the "Requirements" as Source, and a selection of relevant other elements (e.g. Interfaces and Classes) as Target.

But when I use "Right click" -> "Documentation" -> "Edit Matrix Profile..." on my "MatrixSpecification" block, I can only select one specific Package as Source/Target.

Actually my idea was to have a "MatrixSpecification" block somewhere in the model, and a simple double click shall open it.
But without being able to specify a model search there, this will not work.
What can I do to solve my problem? Use a script to create that Matrix?

BR,

EAabecedarian

[Dean Moor]

Did you ever find a solution to this problem?
I have discovered the same thing.