how to update dbids getting selection in autodesk aps

I follow this Tutorials ” tutorials.autodesk.io/tutorials/dashboard/grid ”
I have done all of activities and I tried it out.

The “Data Grid” shows all of models data.
But I want to show only “isolation has changed items dbids” (by clicking or filtering).
of course, incase without selection, I do not want to show only selection but all.

I think update method should be changed on “DataGridPanel.js”.
But I am not sure. please help me

Regards,

/DataGridPanel.js

pdate(model, dbids) {
        model.getBulkProperties(dbids, { propFilter: DATAGRID_CONFIG.requiredProps }, (results) => {
            this.table.replaceData(results.map((result) => DATAGRID_CONFIG.createRow(result.dbId, result.name, result.properties)));
        }, (err) => {
            console.error(err);
        });
    }

/DataGridExtension.js

onModelLoaded(model) {
        super.onModelLoaded(model);
        if (this._panel && this._panel.isVisible()) {
            this.update();
        }
    }

    async update() {
        const dbids = await this.findLeafNodes(this.viewer.model);
        this._panel.update(this.viewer.model, dbids);
    }