Can't get grid multi selection working

Ext.grid.Panel.multiSelect has been deprecated. So, how do I do it now? This doesn't work:

Code:

            {
                xtype: 'grid',
                store: Ext.create('Ext.my.store.content.standard.Store'),
                selModel: Ext.create('Ext.selection.Model', {mode: 'MULTI'}),
                selType: 'rowmodel',
                columns: [{
                    text: loc.stepRulesColRuleName,
                    dataIndex: 'title',
                    flex: 2,
                    renderer: this.ruleNameColumnRenderer
                }]
            }

In fact, this prevents ANY selection at all!

What is the new-and-improved ExtJS 5 way of doing grid multiSelect row selection?

Thanks!



Can't get grid multi selection working