Custom Visual - SelectionIdBuilder Method - WithMatrixnode

[Nishantjain]

Hi, 

I am working on a custom visual and using the DataViewMappings - Matrix. I am struggling to get the selectionIDs to work. 

My dataviewmapping is below. I am not using columns but just rows

"dataViewMappings": [
        {
            "matrix": {
                "rows": {
                    "for": {
                        "in": "category"
                    }
                },
                "values": {
                    "select": [
                        {
                            "for": {
                                "in": "measure"
                            }
                        }
                    ]
                }
            }
        }
    ]

I have successfully generated the selectionId

var selectionId: ISelectionId = host.createSelectionIdBuilder()
                            .withMatrixNode(child, rows.levels)
                            .createSelectionId();

The data looks like this

Now when I select the first "Carretra" in country "Germany", in my visual, the other visuals don't filter just on the "Carretera" for "Germany" but for all "Carretera"

What I would ideally like is for the following selection i.e. just "Carretera" for "Germany"

When I check the selectionIDs, I get unique selectionIDs for each datapoint

screenshot below showing 6 datapoints, (3 countries by 2 product)

Any help is much appreciated

Thanks

Nishant