Feature attribute as input for FeaturePictureBox

Hello VertiGIS Reporting community

I would like to show the geometries of a set of features in a feature picture box that share the same attribute value. For instance, i have a selection of three different objectids, but they share the value 'bsl_id'. An exmaple could be
feature 1:
    attributes:
        objectid: 1
        bsl_id: test_0123_test
feature 2:
    attributes:
        objectid: 2
        bsl_id: test_0123_test
feature 3: 
    attributes:
        objectid: 3
        bsl_id: test_0123_test
        
The geometry i would like to show is a map context that shows the geometry extent of all the features with the same value for bsl_id

The idea of this functionality is to show the user what feature (including its geometry) belongs to a superset of features that contain the same overarching attribute value.

I managed to show the singular geometry in the report, but i am not able to set the combined geometry extent of the multiple features as an input for the second feature box.

The report is called from a Workflow Module v5.47 and the Reporting Module is v.5.24.1.

Kind regards,

Marijn Meilink