Filtered association in ABAP CDS

Hi colleagues,

is it possible to access attributes of the projection list in an association, so that the hard coded value is replaced by the value in "WorkflowPhase"?

The syntax check allows that, but the filtering does not work:

accessing the field by $projection or via the table directly (ROOT.workflow_phase) does not work either.

Any ideas?

Thanks & regards,

Ilijana