SelectionID: MatrixNode - Selection based on hierarchy and not the node

Hi there, 
I have successfully built a custom visual using the dataviewmappings "matrix" and everything is working fine except the interaction. 

For example, my data is structure as 

2013

  - Jan

  - Feb

  - Mar

2014

  - Jan

  - Feb

  - Mar

When I select the child "Jan" for year 2013, the interaction is only for "Jan" but not for 2013 and it is showing Jan for both 2013 and 2014. I want the year to be filtered based on the child node selected. 

I have got the selectionid for all the nodes but they are not linked in a hierarchy. They are currently independent to each other. 

I have build the selectionId as below. This gives the selectionId for the each node

//obj is the node in the hierarchy

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

I have built the interaction as below

if (this.host.allowInteractions) {
    const isCtrlPressed: boolean = (d3.event as MouseEvent).ctrlKey;
    //d3.select(nodes[i]).attr('fill-opacity', 1);
    this.selectionManager
        .select(d.selectionId, isCtrlPressed)
        .then((ids: ISelectionId[]) => {
            if (this.selectionManager.hasSelection() && !isCtrlPressed) {
                bars.attr('fill-opacity', 0.5);
            };
            d3.select(nodes[i]).attr('fill-opacity', 1);
        });
    (<Event>d3.event).stopPropagation();
}

Thanks

Nishant