Single quantity reference does not pick files

The following snippet shows a type str quantity with FileEditQuantity annotation (data_file) and another quantity with type reference (data_file as well). I would like to be able to reference files so the user must not fill multiple quantities around with the same filename. So far, the reference is just picking it as a pure string.

As you see, I also use a default value for the referenced quantities so the user can just drag his xlsx file in the root of his schema.

definitions:
  name: 'Electronic Lab Notebook schema for MOVPE-STO'
  sections:  # Schemas consist of section definitions
    Movpe_experiment:
      base_sections: 
       - ../upload/raw/base_classes.schema.archive.yaml#Experiment 
       -  nomad.parsing.tabular.TableData
      m_annotations:
        eln: 
      quantities:
        data_file:
          type: str
          m_annotations:
            tabular_parser:
              comment: '#'
              mode: row
              target_sub_section: 
               - My_sub
            browser:
              adaptor: RawFileAdaptor 
            eln:
              component: FileEditQuantity  
      sub_sections:
        My_sub:
          repeats: true
          section:
            quantities:
              film:
                type: str
                m_annotations:
                  tabular:
                    name: Overview/Film
                  eln:
                    component: StringEditQuantity
    Process_movpesto:
      base_sections: 
      - ../upload/raw/base_classes.schema.archive.yaml#Activity
      -  nomad.parsing.tabular.TableData
      m_annotations:
        eln: 
      quantities:
        data_file:
          type:
            type_kind: quantity_reference
            type_data: '#/definitions/section_definitions/0/quantities/0'
          default: "'#/data/data_file'"